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Changes with Apache 2.1.0-dev

  [Remove entries to the current 2.0 section below, when backported]

  *) Add version string to provider API.  [Justin Erenkrantz]

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  *) Rewrite of aaa modules to an authn/authz model.
     [Dirk-Willem van Gulik, Justin Erenkrantz]

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Changes with Apache 2.0.44
  *) build: './configure && make' now works without an in-tree
     apr and apr-util. [Wilfredo Sanchez]

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  *) mod_negotiation: Set the appropriate mime response headers
     (Content-Type, charset, Content-Language and Content-Encoding)
     for negotated type-map "Body:" responses (such as the error
     pages.)  [André Malo <nd@perlig.de>]

  *) mod_log_config: Allow '%%' escaping in CustomLog format
     strings to insert a literal, single '%'.
     [André Malo <nd@perlig.de>]

  *) Fix the building of cgi command lines when the query string
     contains '='.  PR 13914  [Ville Skyttä <ville.skytta@iki.fi>,
     Jeff Trawick]

  *) Replace APU_HAS_LDAPSSL_CLIENT_INIT with APU_HAS_LDAP_NETSCAPE_SSL
     as set by apr-util in util_ldap.c. This should allow mod_ldap
     to work with the Netscape/Mozilla LDAP library. [Øyvin Sømme
     <somme@oslo.westerngeco.slb.com>, Graham Leggett]

  *) Reorder the definitions for mod_ldap and mod_auth_ldap within
     config.m4 to make sure the parent mod_ldap is defined first.
     This ensures that mod_ldap comes before mod_auth_ldap in the
     httpd.conf file, which is necessary for mod_auth_ldap to load.
     PR 14256  [Graham Leggett]
  *) Fix critical bug in new --enable-v4-mapped configure option
     implementation which broke IPv4 listening sockets on some
     systems.  [hiroyuki hanai <hanai@imgsrc.co.jp>]

  *) mod_autoindex: AddDescription directives for directories
     now work as in Apache 1.3, where no trailing '/' is
     specified on the directory name.  Previously, the trailing
     '/' *had* to be specified, which was incompatible with
     Apache 1.3.  PR 7990  [Jeff Trawick]

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  *) Fix for PR 14556. The expiry calculations in mod_cache were
     trying to perform "now + ((date - lastmod) * factor)" where
     date == lastmod resulting in "now + 0". The code now follows
     the else path (using the default expiration) if date is
     equal to lastmod. [rx@armstrike.com (Sergey), Paul J. Reder]

  *) Use AP_DECLARE in the debug versions of ap_strXXX in case the
     default calling convention is not the same as the one used by
     AP_DECLARE.  [Juan Rivera <Juan.Rivera@citrix.com>]

  *) mod_cache: Don't cache response header fields designated
     as hop-by-hop headers in HTTP/1.1 (RFC 2616 Section 13.5.1).
     [Estrade Matthieu <estrade-m@ifrance.com>, Brian Pane]

  *) mod_cgid: Handle environment variables containing newlines.
     PR 14550  [Piotr Czejkowski <apache@czarny.eu.org>, Jeff
     Trawick]

  *) Move mod_ext_filter out of experimental and into filters.
     [Jeff Trawick]

  *) Fixed a memory leak in mod_deflate with dynamic content.
     PR 14321  [Ken Franken <kfranken@decisionmark.com>]

  *) Add --[enable|disable]-v4-mapped configure option to control
     whether or not Apache expects to handle IPv4 connections
     on IPv6 listening sockets.  Either setting will work on 
     systems with the IPV6_V6ONLY socket option.  --enable-v4-mapped
     must be used on systems that always allow IPv4 connections on
     IPv6 listening sockets.  PR 14037 (Bugzilla), PR 7492 (Gnats)
     [Jeff Trawick]

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  *) This fixes a problem where the underlying cache code
     indicated that there was one more element on the cache
     than there actually was. This happened since element 0
     exists but is not used. This code allocates the correct
     number of useable elements and reports the number of
     actually used elements. The previous code only allowed
     MCacheMaxObjectCount-1 objects to be stored in the
     cache. [Paul J. Reder]

  *) mod_setenvif: Add SERVER_ADDR special keyword to allow
     envariable setting according to the server IP address
     which received the request.  [Ken Coar]

  *) mod_cgid: Terminate CGI scripts when the client connection 
     drops.  PR 8388  [Jeff Trawick]

  *) Rearrange OpenSSL engine initialization to support RAND 
     redirection on crypto accelerator. 
     [Frederic DONNAT <frederic.donnat@zencod.com>]

  *) Always emit Vary header if mod_deflate is involved in the
     request.  [Andre Malo <nd@perlig.de>]
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  *) mod_isapi: Stop unsetting the 'empty' query string result with
     a NULL argument in ecb->lpszQueryString, eliminating segfaults
     for some ISAPI modules.  PR 14399
     [Detlev Vendt <detlev.vendt@brillit.de>]

  *) mod_isapi: Fix an issue where the HSE_REQ_DONE_WITH_SESSION
     notification is received before the HttpExtensionProc() returns 
     HSE_STATUS_PENDING.  This only affected isapi .dll's configured 
     with the ISAPIFakeAsync on directive.  PR 11918
     [John DeSetto <jdesetto@radiantsystems.com>, William Rowe]

  *) mod_isapi: Fix the issue where all results from mod_isapi would
     run through the core die handler resulting in invalid responses
     or access log entries.  PR 10216 [William Rowe]

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  *) Improves the user friendliness of the CacheRoot processing
     over my last pass. This version avoids the pool allocations
     but doesn't avoid all of the runtime checks. It no longer
     terminates during post-config processing. An error is logged
     once per worker, indicating that the CacheRoot needs to be set.
     [Paul J. Reder]

  *) Fix a bug where we keep files open until the end of a 
     keepalive connection, which can result in:
     (24)Too many open files: file permissions deny server access
     especially on threaded servers.  [Greg Ames, Jeff Trawick]

  *) Fix a bug in which mod_proxy sent an invalid Content-Length
     when a proxied URL was invoked as a server-side include within
     a page generated in response to a form POST.  [Brian Pane]

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  *) Added code to process min and max file size directives and to
     init the expirychk flag in mod_disk_cache. Added a clarifying
     comment to cache_util.   [Paul J. Reder]

  *) The value emitted by ServerSignature now mimics the Server HTTP
     header as controlled by ServerTokens.  [Francis Daly <deva@daoine.org>]

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  *) Gracefully handly retry situations in the SSL input filter,
     by following the SSL libraries' retry semantics.
     [William Rowe]

  *) Terminate CGI scripts when the client connection drops.  This
     fix only applies to some normal paths in mod_cgi.  mod_cgid
     is still busted.  PR 8388  [Jeff Trawick]

  *) Fix a bug where 416 "Range not satisfiable" was being
     returned for content that should have been redirected.
     [Greg Ames]
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  *) Fix memory leak in mod_ssl from internal SSL library allocations
     within SSL_get_peer_certificate and X509_get_pubkey.
     [Zvi Har'El <rl@math.technion.ac.il>
      Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>].

  *) mod_ssl uses free() inappropriately in several places, to free
     memory which has been previously allocated inside OpenSSL.
     Such memory should be freed with OPENSSL_free(), not with free().
     [Nadav Har'El <nyh@math.technion.ac.il>,
      Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>].

  *) Emit a message to the error log when we return 404 because
     the URI contained '%2f'.  (This was previously nastily silent
     and difficult to debug.)  [Ken Coar]

  *) Fix streaming output from an nph- CGI script.  CGI:IRC now
     works.  PR 8482  [Jeff Trawick]

  *) More accurate logging of bytes sent in mod_logio when
     the client terminates the connection before the response
     is completely sent  [Bojan Smojver <bojan@rexursive.com>]

  *) Fix some problems in the perchild MPM.  
     [Jonas Eriksson <jonas@webkonsulterna.com>]

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  *) Change the CacheRoot processing to check for a required
     value at config time. This saves a lot of wasted processing
     if the mod_disk_cache module is loaded but no CacheRoot
     was provided. This fix also adds code to log an error
     and avoid useless pallocs and procesing when the computed
     cache file name cannot be opened. This also updates the
     docs accordingly.  [Paul J. Reder]

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  *) Introduce the EnableSendfile directive, allowing users of NFS 
     shares to disable sendfile mechanics when they either fail
     outright or provide intermitantly corrupted data.  PR 
     [William Rowe]

  *) Resolve the error "An operation was attempted on something 
     that is not a socket.  : winnt_accept: AcceptEx failed. 
     Attempting to recover." for users of various firewall and
     anti-virus software on Windows.  PR 8325  [William Rowe]

  *) Add the ProxyBadHeader directive, which gives the admin some
     control on how mod_proxy should handle bogus HTTP headers from
     proxied servers. This allows 2.0 to "emulate" 1.3's behavior if
     desired. [Jim Jagielski]

  *) Change the LDAP modules to export their symbols correctly
     during a Windows build. Add dsp files for Windows. Update
     README.ldap file for Windows build instructions.
     [Andre Schild <A.Schild@aarboard.ch>]

  *) Performance improvements for the code that generates HTTP
     response headers  [Brian Pane]

  *) Add -S as a synonym for -t -DDUMP_VHOSTS.
     [Thom May <thom@planetarytramp.net>]

  *) Fix a bug with dbm rewrite maps which caused the wrong value to
     be used when the key was not found in the dbm.  PR 13204
     [Jeff Trawick]

  *) Fix a problem with streaming script output and mod_cgid.
     [Jeff Trawick]

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  *) Add ap_register_provider/ap_lookup_provider API.
     [John K. Sterling <john@sterls.com>, Justin Erenkrantz]

Changes with Apache 2.0.43

  *) SECURITY: [CAN-2002-0840] HTML-escape the address produced by 
     ap_server_signature() against this cross-site scripting 
     vulnerability exposed by the directive 'UseCanonicalName Off'.  
     Also HTML-escape the SERVER_NAME environment variable for CGI 
     and SSI requests.  It's safe to escape as only the '<', '>', 
     and '&' characters are affected, which won't appear in a valid 
     hostname.  Reported by Matthew Murphy <mattmurphy@kc.rr.com>.
     [Brian Pane]

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  *) Fix a core dump in mod_cache when it attemtped to store uncopyable
     buckets. This happened, for instance, when a file to be cached
     contained SSI tags to execute a CGI script (passed as a pipe
     bucket). [Paul J. Reder]

  *) Ensure that output already available is flushed to the network
     when the content-length filter realizes that no new output will
     be available for a while.  This helps some streaming CGIs as
     well as some other dynamically-generated content.  [Jeff Trawick]

  *) Fix a mutex problem in mod_ssl session cache support which
     could lead to an infinite loop.  PR 12705  
     [amund.elstad@ergo.no (Amund Elstad), Jeff Trawick]

  *) SECURITY: CAN-2002-1156 (cve.mitre.org)
      Fix the exposure of CGI source when a POST request is sent to 
      a location where both DAV and CGI are enabled. [Ryan Bloom]
  *) Allow the UserDir directive to accept a list of directories.
     This matches what Apache 1.3 does.  Also add documentation for
     this feature. [Jay Ball <jay@veggiespam.com>]

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  *) New Module: mod_logio. adds the ability to log bytes sent and
     received. [Bojan Smojver <bojan@rexursive.com>]

  *) SuExec needs to use the same default directory as the rest of
     server, namely /usr/local/apache2.  
     [SangBeom han <sbhan@os.korea.ac.kr>]

  *) Get mod_auth_ldap to retry connections on LDAP_SERVER_DOWN.
     [Thomas Bennett <thomas.bennett@eds.com>, Graham Leggett]

  *) Make sure the contents of the WWW-Authenticate header is
     passed on a 4xx error by proxy. Previously all headers
     were dropped, resulting in the browser being unable to
     authenticate. [Dr Richard Reiner <rreiner@fscinternet.com>,
     Richard Danielli <rdanielli@fscinternet.com>, Graham Wiseman
     <gwiseman@fscinternet.com>, David Henderson
     <dhenderson@fscinternet.com>]

  *) Make mod_cache's CacheMaxStreamingBuffer directive work
     properly for virtual hosts that override server-wide mod_cache
     setttings.  [Matthieu Estrade <estrade-m@ifrance.com>]

  *) Add -p option to apxs to allow programs to be compiled with apxs.
     [Justin Erenkrantz]

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Changes with Apache 2.0.42

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  *) mod_dav: Check for versioning hooks before using them.
     [Greg Stein]
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Changes with Apache 2.0.41
  *) The protocol version (eg: HTTP/1.1) in the request line parsing
     is now case insensitive. [Jim Jagielski]

  *) Allow AddOutputFilterByType to add multiple filters per directive.
     [Justin Erenkrantz]

  *) Remove warnings with Sun's Forte compiler.  [Justin Erenkrantz]

  *) Fixed mod_disk_cache's generation of 304s
     [Kris Verbeeck <Kris.Verbeeck@ubizen.com>]

  *) Add support for using fnmatch patterns in the final path
     segment of an Include statement (eg.. include /foo/bar/*.conf).
     and remove the noise on stderr during config dir processing.
     [Joe Orton <jorton@redhat.com>]

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  *) mod_cache: cache_storage.c. Add the hostname and any request
     args to the key generated for caching. This provides a unique
     key for each virtual host and for each request with unique
     args. [Paul J. Reder, args code provided by Kris Verbeeck]

  *) mod_cache: Do not cache responses to GET requests with query
     URLs if the origin server does not explicitly provide an
     Expires header on the response (RFC 2616 Section 13.9)
     [Kris Verbeeck krisv@be.ubizen.com]
  *) Fix memory leak in core_output_filter.  [Justin Erenkrantz]

  *) Update OpenSSL detection to work on Darwin.
     [Sander Temme <sctemme@covalent.net>]

  *) Update the xslt and css to give the documentation a more
     modern style.
     [André Malo <nd@perlig.de>, Gernot Winkler <greh@o3media.de>]
  *) Fix some bucket memory leaks in the chunking code
     [Joe Schaefer <joe+apache@sunstarsys.com>]

  *) Add ModMimeUsePathInfo directive.  [Justin Erenkrantz]

  *) mod_cache: added support for caching streamed responses (proxy,
     CGI, etc) with optional CacheMaxStreamingBuffer setting [Brian Pane]

  *) Add image/x-icon to httpd.conf PR 10993.
     [Ian Holsman, Peter Bieringer <pb@bieringer.de>]

  *) Fix FileETags none operation.  PR 12207.
     [Justin Erenkrantz, Andrew Ho <andrew@tellme.com>]

  *) Restored the experimental leader/followers MPM to working
     condition and converted its thread synchronization from
     mutexes to atomic CAS.  [Brian Pane]

  *) Fix Logic on non-html file removal in mod_deflate
     [Kris Verbeeck <Kris.Verbeeck@ubizen.com>]

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  *) Fix "ab -g"'s truncated year: the last digit was cut off.
     [Leon Brocard <acme@astray.com>]

  *) mod_rewrite can now sets cookies in err_headers, uses the correct
     expiry date, and can now set the path as well
     PR 12132,12181,12172.
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     [Ian Holsman / Rob Cromwell <apachechangelog@robcromwell.com>]

  *) The content-length filter no longer tries to buffer up
     the entire output of a long-running request before sending
     anything to the client.  [Brian Pane]

  *) Win32: Lower the default stack size from 1MB to 256K. This will
     allow around 8000 threads to be started per child process. 
     'EDITBIN /STACK:size apache.exe' can be used to change this 
     value directly in the apache.exe executable.
     [Bill Stoddard]

  *) Win32: Implement ThreadLimit directive in the Windows MPM.
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  *) Remove CacheOn config directive since it is set but never checked.
     No sense wasting cycles on unused code. Besides, the only truly
     bug free code is deleted code. :)   [Paul J. Reder]

  *) BufferLogs are now run-time enabled, and the log_config now has 2 new
     callbacks to allow a 3rd party module to actually do the writing of the
     log file [Ian Holsman]

  *) Correct ISAPIReadAheadBuffer to default to 49152, per mod_isapi docs.
     [André Malo, Astrid Keßler <kess@kess-net.de>]

  *) Fix Segfault in mod_cache. [Kris Verbeeck <Kris.Verbeeck@ubizen.com>]

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  *) Fix a null pointer dereference in the merge_env_dir_configs
     function of the mod_env module. PR 11791
     [Paul J. Reder]

  *) New option to ServerTokens 'maj[or]'. Only show the major version
     Also Surfaced this directive in the standard config (default FULL)
     [Ian Holsman]

  *) Change mod_rewrite to use apr-util's dbm support for dbm rewrite
     maps.  The dbm type (e.g., ndbm, gdbm) can be specified on the
     RewriteMap directive.  PR 10644  [Jeff Trawick]
  *) Fixed mod_rewrite's RewriteMap prg: support so that request/response
     pairs will no longer get out of sync with each other.  PR 9534
     [Cliff Woolley]

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  *) Fixes required to get quoted and escaped command args working in
     mod_ext_filter. PR 11793 [Paul J. Reder]

  *) mod-proxy: handle proxied responses with no status lines
     [JD Silvester <jsilves@uwo.ca>, Brett Huttley <brett@huttley.net>]
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  *) Fix bug where environment or command line arguments containing 
     non-ASCII-7 characters would cause the Win32 child process creation
     to fail.  PR 11854  [William Rowe]

  *) Bug #11213.. make module loading error messages more informative 
     [Ian Darwin <Ian779@darwinsys.com>]

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  *) thread safety & proxy-ftp [Alexey Panchenko alexey@liwest.ru, Ian Holsman]

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  *) mod_disk_cache works much better. This module should still
     be considered experimental. [Eric Prud'hommeaux]
  *) Performance improvement for keepalive requests: when setting
     aside a small file for potential concatenation with the next
     response on the connection, set aside the file descriptor rather
     than copying the file into the heap.  [Brian Pane]
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Changes with Apache 2.0.40
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  *) SECURITY: [CAN-2002-0661] Close a very significant security hole that 
     applies only to the Win32, OS2 and Netware platforms.  Unix was not 
     affected, Cygwin may be affected.  Certain URIs will bypass security
     and allow users to invoke or access any file depending on the system 
     configuration.  Without upgrading, a single .conf change will close 
     the vulnerability.  Add the following directive in the global server
     httpd.conf context before any other Alias or Redirect directives;
         RedirectMatch 400 "\\\.\."
     Reported by Auriemma Luigi <bugtest@sitoverde.com>.
     [Brad Nicholes]

  *) SECURITY:  Close a path-revealing exposure in multiview type
     map negotiation (such as the default error documents) where the
     module would report the full path of the typemapped .var file when
     multiple documents or no documents could be served based on the mime
     negotiation.  Reported by Auriemma Luigi <bugtest@sitoverde.com>.
     [CAN-2002-0654]  [William Rowe]

  *) SECURITY:  Close a path-revealing exposure in cgi/cgid when we 
     fail to invoke a script.  The modules would report "couldn't create 
     child process /path-to-script/script.pl" revealing the full path
     of the script.  Reported by Jim Race <jrace@qualys.com>.
     [CAN-2002-0654]  [Bill Stoddard]

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  *) Set aside the apr-iconv and apr_xlate() features for the Win32
     build of 2.0.40 so development can be completed.  A patch, from
     <http://www.apache.org/dist/httpd/patches/apply_to_2.0.40/>
     will be available for those that wish to work with apr-iconv.
     [William Rowe]

  *) Fix proxy so that it is possible to access ftp: URLs via a proxy
     chain. [Peter Van Biesen <peter.vanbiesen@vlafo.be>]

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  *) mod-deflate now checks to make sure that 'gzip-only-text/html' is
     set to 1, so we can exclude things from the general case with
     browsermatch. [Ian Holsman, Andre Schild <A.Schild@aarboard.ch>]
  
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  *) Accept multiple leading /'s for requests within the DocumentRoot.
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     PR 10946  [William Rowe, David Shane Holden <dpejesh@yahoo.com>]
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  *) Solved the reports of .pdf byterange failures on Win32 alone.
     APR's sendfile for the win32 platform collapses header and trailer
     buffers into a single buffer.  However, we destroyed the pointers
     to the header buffer if a trailer buffer was present.  PR 10781
     [William Rowe]

  *) mod_ext_filter: Add the ability to enable or disable a filter via
     an environment variable.  Add the ability to register a filter of
     type other than AP_FTYPE_RESOURCE.  [Jeff Trawick]

  *) Restore the ability to specify host names on Listen directives.
     PR 11030.  [Jeff Trawick, David Shane Holden <dpejesh@yahoo.com>]

  *) When deciding on the default address family for listening sockets, 
     make sure we can actually bind to an AF_INET6 socket before
     deciding that we should default to AF_INET6.  This fixes a startup
     problem on certain levels of OpenUNIX.  PR 10235.  [Jeff Trawick]

  *) Replace usage of atol() to parse strings when we might want a
     larger-than-long value with apr_atoll(), which returns long long.
     This allows HTTPD to deal with larger files correctly.
     [Shantonu Sen <ssen@apple.com>]

  *) mod_ext_filter: Ignore any content-type parameters when checking if
     the response should be filtered.  Previously, "intype=text/html"
     wouldn't match something like "text/html;charset=8859_1".
     [Jeff Trawick]

  *) mod_ext_filter: Set up environment variables for external programs.
     [Craig Sebenik <craig@netapp.com>]

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  *) Modified the HTTP_IN filter to immediately append the EOS (end of
     stream) bucket for C-L POST bodies, saving a roundtrip and allowing
     the caller to determine that no content remains without prefetching
     additional POST body.  [William Rowe]

  *) Get proxy ftp to work over IPv6.  [Shoichi Sakane <sakane@kame.net>]

  *) Look for OpenSSL libraries in /usr/lib64.  [Peter Poeml <poeml@suse.de>]

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  *) Update SuSE layout.  [Peter Poeml <poeml@suse.de>]

  *) Changes to the internationalized error documents:
     Comment them out in the default config file to make the default
     install as simple as possible; Correct the english 500 error to
     be more understandable; Add a Swedish translation.
     [Thomas Sjogren <thomas@northernsecurity.net>, 
      Erik Abele <erik@codefaktor.de>, Rich Bowen, Joshua Slive]
     
  *) Increase the limit on file descriptors per process in apachectl.
     [Brian Pane]

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  *) Fix a dependency error when building ApacheMonitor, so that Win32
     and MSVC now trust that the project is current (when it is).
     [James Cox <imajes@php.net>]

  *) mod_ext_filter: don't segfault if content-type is not set.  PR 10617.
     [Arthur P. Smith <apsmith@aps.org>, Jeff Trawick]

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  *) APR-Util Renames pending have been completed [Thom May]

  *) Performance improvements for the code that reads request
     headers (ap_rgetline_core() and related functions)  [Brian Pane]

  *) Add a new directive: MaxMemFree.  MaxMemFree makes it possible
     to configure the maximum amount of memory the allocators will
     hold on to for reuse.  Anything over the MaxMemFree threshold
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     will be free()d.  This directive is useful when uncommon large
     peaks occur in memory usage.  It should _not_ be used to mask
     defective modules' memory use.  [Sander Striker]
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  *) Fixed the Content-Length filter so that HTTP/1.0 requests to CGI
     scripts would not result in a truncated response.
     [Ryan Bloom, Justin Erenkrantz, Cliff Woolley]

  *) Add a filter_init parameter to the filter registration functions
     so that a filter can execute arbitrary code before the handlers
     are invoked.  This resolves a problem where mod_include requests
     would incorrectly return a 304.  [Justin Erenkrantz]

  *) Fix a long-standing bug in 2.0, CGI scripts were being called
     with relative paths instead of absolute paths.  Apache 1.3 used
     absolute paths for everything except for SuExec, this brings back
     that standard.  [Ryan Bloom]

  *) Fix infinite loop due to two HTTP_IN filters being present for
     internally redirected requests.  PR 10146.  [Justin Erenkrantz]

  *) Switch conn_rec->keepalive to an enumeration rather than a bitfield.
     [Justin Erenkrantz]

  *) Fix mod_ext_filter to look in the main server for filter definitions
     when running in a vhost if the filter definition is not found in
     the vhost.  PR 10147  [Jeff Trawick]

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  *) Support WinNT CGI invocation through ScriptInterpreterSource 
     'registry' for script interpreter paths and names with non-ascii
     characters in the executable filepath.  [William Rowe]

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  *) Support the -w flag on to keep the Win32 console open on error.
     [William Rowe]

  *) Normalize the hostname value in the request_rec to all-lowercase
     [Perry Harrington <pedward@webcom.com>]

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  *) Fix WinNT cgi 500 errors when QUERY_ARGS or other strings include
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     extended characters (non US-ASCII) in non-utf8 format.  This brings
     Win32 back into CGI/1.1 compliance, and leaves charset decoding up
     to the cgi application itself.  [William Rowe]

  *) Major overhaul of mod_dav, mod_dav_fs and the experimental/cache
     modules to bring them up to the current apr/apr-util APIs.
     [William Rowe]

  *) Fix segfault in mod_mem_cache most frequently observed when
     serving the same file to multiple clients on an MP machine.
     [Bill Stoddard]
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  *) mod_rewrite can now set cookies  (RewriteRule (.*) - [CO=name:$1:.domain])
     [Brian Degenhardt <bmd@mp3.com>, Ian Holsman]

  *) Fix perchild to work with apachectl by adding -k support to perchild.
     PR 10074  [Jeff Trawick]

  *) Fix a silly htpasswd.c logic error that incorrectly reported that
     both -c and -n had been used.  PR 9989  [Cliff Woolley]

  *) Fixed a mod_include error case in which no HTTP response was sent
     to the client if an shtml document contained an unterminated SSI
     directive [Brian Pane]

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  *) Improve ap_get_client_block implementation by using APR-util brigade
     helper functions and relying on current filter assumptions.
     [Justin Erenkrantz]

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Changes with Apache 2.0.39

  *) Fixed a build problem in htpasswd.c on Win32.
     [Guenter Knauf <eflash@gmx.net>, Cliff Woolley]
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Changes with Apache 2.0.38

  *) Rewrite htpasswd to use APR.  The removes the annoying warning about
     tmpnam being unsafe.   [Ryan Bloom]

  *) We must set the MIME-type for .shtml files to text/html if we want them
     to be parsed for SSI tags.  Add the config for that to the default 
     config file so that it is easier to enable .shtml parsing.
     [Dave Dyer <ddyer@real-me.net>]

  *) Fixed a problem with 'make install' on ReliantUnix.
     [Jean-frederic Clere <jfrederic.clere@fujitsu-siemens.com>]

  *) Make the default_handler catch all requests that aren't served by
     another handler.  This also gets us to return a 404 if a directory
     is requested, there is no DirectoryIndex, and mod_autoindex isn't
     loaded.  [Justin Erenkrantz]

  *) Fixed the handling of nested if-statements in shtml files.
     PR 9866  [Brian Pane]

  *) Allow 'make install DESTDIR=/path'.  This allows packagers to install
     into a directory different from the one that was configured.  This 
     also mirrors the root= feature from 1.3.  We cannot use prefix=,
     because both APR and APR-util resolve their installation paths at 
     configuration time.  This means that there is no variable prefix 
     to replace.  [Andreas Hasenack <andreas@netbank.com.br>]

  *) AIX 4.3.2 and above: Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT.
     These levels of AIX don't have a thundering herd problem with
     accept().  [Jeff Trawick]

  *) prefork MPM: Ignore mutex errors during graceful restart.  For
     certain types of mutexes (particularly SysV semaphores), we
     should expect to occasionally fail to obtain or release the
     mutex during restart processing.  [Jeff Trawick]

  *) Fix install-bindist.sh so that it finds any perl instead of just
     early perl 5.x versions.  This is consistent with a build/install
     from source, and it allows the perl scripts installed by a bindist 
     to work on systems with perl 5.6.  [Jeff Trawick]

  *) Fix apxs so that the makefile created by "apxs -g" works on AIX and
     Tru64 (and probably some other platforms).  [Jeff Trawick]

  *) Allow CGI scripts to return their Content-Length.  This also fixes a
     hang on HEAD requests seen on certain platforms (such as FreeBSD).
     [Justin Erenkrantz]

  *) Added log rotation based on file size to the RotateLog support
     utility. [Brad Nicholes]

  *) Fix some casting in mod_rewrite which broke random maps.
     PR 9770  [Allan Edwards, Greg Ames, Jeff Trawick]
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Changes with Apache 2.0.37

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  *) allow POST method over SSL when per-directory client cert
     authentication is used with 'SSLOptions +OptRenegotiate' enabled
     and a client cert was found in the ssl session cache.

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  *) 'SSLOptions +OptRengotiate' will use client cert in from the ssl
     session cache when there is no cert chain in the cache.  prior to
     the fix this situation would result in a FORBIDDEN response and
     error message "Cannot find peer certificate chain"
     [Doug MacEachern]

  *) ap_finalize_sub_req_protocol() shouldn't send an EOS bucket if
     one was already sent.  PR 9644  [Jeff Trawick]

  *) Fix the display of the default name for the mime types config
     file.  PR 9729  [Matthew Brecknell <mbrecknell@orchestream.com>]

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  *) Fix the working directory *for WinNT/2K/XP services only* to
     change to the Apache directory (one level above the location 
     of Apache.exe, in the case that Apache.exe resides in bin/.)
     Solves the case of ServerRoot /foo paths where /foo was not
     on the same drive as /winnt/system32.  [William Rowe]

  *) Make 2.0's "AcceptMutex" startup message now "completely"
     match how 1.3 does it. [Jim Jagielski]

  *) Implement a fixed size memory cache using a priority queue
     [Ian Holsman]

  *) Fix apxs to allow "apxs -q installbuilddir" and to allow
     querying certain other variables from config_vars.mk.  PR 9316  
     [Jeff Trawick]

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  *) Added the "detached" attribute to the cgi_exec_info_t internals
     so that Win32 and Netware won't create a new window or console
     for each CGI invoked.  PR 8387
     [Brad Nicholes, William Rowe]

  *) Consolidated the command line parameters and attributes that are 
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     manipulated by the optional function ap_cgi_build_command() in
     mod_cgi into a single structure.
  *) Get rid of uninitialized value errors with "apxs -q" on certain
     variables.  [Stas Bekman <stas@stason.org>]

  *) Fix apxs to allow it to work when the build directory is somewhere
     besides server-root/build.  PR 8453  
     [Jeff Trawick and a host of others]

  *) Allow ap_discard_request_body to be called multiple times in the
     same request.  Essentially, ap_http_filter keeps track of whether
     it has sent an EOS bucket up the stack, if so, it will only ever
     send an EOS bucket for this request.  
     [Ryan Bloom, Justin Erenkrantz, Greg Stein]

  *) Remove all special mod_ssl URIs.  This also fixes the bug where
     redirecting (.*) will allow an SSL protected page to be viewed
     without SSL.  [Ryan Bloom]

  *) Fix the binary build install script so that the build logic
     created by "apxs -g" will work when the user has a binary
     build.  [Jeff Trawick]

  *) Allow instdso.sh to work with full paths to the shared module.
     [Justin Erenkrantz]

  *) NetWare: Enabled CGI functionality and added mod_cgi as a built
     in module for NetWare  [Brad Nicholes]

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  *) Changed cgi and piped log behavior to accept 65536 characters
     on Win32 (matching Linux) before deadlocking between outputing
     client stdin, slurping the output from stdout and then the stderr
     stream.  PR 8179  [William Rowe]

  *) Fixed Win32 wintty.exe support to assure the window title is valid.
     Elimiates possible gpfault or garbage title without the -t option.
     [William Rowe]

  *) Rewrite mod_cgi, mod_cgid, and mod_proxy input handling to use
     brigades and input filters.  [Justin Erenkrantz]
  *) Allow ap_http_filter (HTTP_IN) to return EOS when there is no request
     body.  [Justin Erenkrantz]
    
  *) NetWare: Piping log entries through RotateLogs using the 
     CustomLogs directive is finally supported now that we have 
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     the pipes and spawning functionality working.
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  *) SECURITY: CAN-2002-0392 (cve.mitre.org) [CERT VU#944335]
     Detect overflow when reading the hex bytes forming a chunk line.
  *) Allow RewriteMap prg:'s to take command-line arguments.  PR 8464.
     [James Tait <JTait@wyrddreams.demon.co.uk>]

  *) Correctly return 413 when an invalid chunk size is given on
     input.  Also modify ap_discard_request_body to not do anything
     on sub-requests or when the connection will be dropped.
     [Justin Erenkrantz]

  *) Fix the TIME_* SSL var lookups to be threadsafe.  PR 9469.
     [Cliff Woolley]

  *) Ensure that apr_brigade_write() flushes in all of the cases that
     it should to avoid conditions in some modules that could cause
     large amounts of data to be buffered.  [Cliff Woolley]

  *) Fix problem where mod_cache/mod_disk_cache was incorrectly
     stripping the content_type from cached responses.
     [Bill Stoddard]
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  *) apachectl passes through any httpd options.  Note: apachectl
     should be used in preference to httpd since it ensures that any
     appropriate environment variables have been set up.
     [Jeff Trawick]

  *) Fix the combination of mod_cgid, mod_setuexec, and mod_userdir.
     PR 7810  [Colm MacCarthaigh <colmmacc@redbrick.dcu.ie>]

  *) Fix suexec execution of CGI scripts from mod_include.
     PR 7791, 8291  [Colm MacCarthaigh <colmmacc@redbrick.dcu.ie>]

  *) Fix segfaults at startup on some platforms when mod_auth_digest,
     mod_suexec, or mod_ssl were used as DSO's due to the way they
     were tracking the current init phase since DSO's get completely
     unloaded and reloaded between phases.  PR 9413.
     [Tsuyoshi Sasamoto <nazonazo@super.win.ne.jp>, Brad Nicholes]

  *) Fix mod_include's handling of regular expressions in
     "<!--#if" directives [Julius Gawlas <julius_gawlas@hp.com>]

  *) Fix the worker MPM deadlock problem  [Brian Pane]

  *) Modify the module documentation to allow for translations.
     [Yoshiki Hayashi, Joshua Slive]

  *) Fix a file permissions problem which prevented mod_disk_cache
     from working on Unix.  [Jeff Trawick]

  *) Add "-k start|restart|graceful|stop" support to httpd for the Unix 
     MPMs.  These have semantics very similar to the old apachectl 
     commands of the same name.  [Justin Erenkrantz, Jeff Trawick]
  *) Make sure that the runtime dir is created by make install.
     PR 9233.  [Jeff Trawick]

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  *) Fix an unusual set of ./configure arguments that could cause
     mod_http to be built as a DSO, which it currently doesn't
     support.  PR 9244.
     [Cliff Woolley, Robin Johnson <robbat2@orbis-terrarum.net>]

  *) Win32: Fix bug in apr_sendfile() that caused incorrect operation
     of the %X, %b and %B logformat options. PR 8253, 8996.
     [Bill Stoddard]
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  *) If content-encoding is already present, do not run deflate (PR 9222)
     [Kazuhisa ASADA <kaz@asada.sytes.net>]

  *) The APLOG_NOERRNO flag to ap_log_[r]error() is now deprecated.
     It is currently ignored and it will be removed in a future release
     of Apache.  [Jeff Trawick]

  *) Removed documentation references to the no-longer-supported
     "make certificate" feature of mod_ssl for Apache 1.3.x.  Test
     certificates, if truly desired, can be generated using openssl
     commands.  PR 8724.  [Cliff Woolley]

  *) Remove SSLLog and SSLLogLevel directives in favor of having
     mod_ssl use the standard ErrorLog directives.  [Justin Erenkrantz]

  *) OS/390: LIBPATH no longer has to be manually uncommented in
     envvars to get apachectl to set up httpd properly.  [Jeff Trawick]

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  *) mod_isapi: All mod_isapi directives, excluding ISAPICacheFile,
     may now be specified to the <File/Directory > container, rather
     than by vhost.  [William Rowe]

  *) mod_isapi: Experimental support for faux async support for ISAPI
     modules.  [William Rowe]

  *) mod_isapi: Major refactoring of the code to rely on apr internals
     rather than MS APIs (using our own mod_isapi.h headers for ISAPI
     symbol definitions.)  [William Rowe]

  *) mod_isapi: Fixed the return string length from GetServerVariable
     callback, it was not including the trailing null in the consumed
     buffer size.  This was particularly bad for Delphi 6.0 users.
     PR 8934  [Sebastian Hantsch <sebastian.hantsch@gmx.de>]

  *) Fixed Win32 builds for Microsoft VisualStudio 7.0 (.net).
     [William Rowe]

  *) Make apxs look in the correct directory for envvars.  It was
     broken when sbindir != bindir.  PR 8869
     [Andreas Sundström <sunkan@zappa.cx>]
  
  *) Fix mod_deflate corruption when using multiple buckets.  PR 9014.
     [Asada Kazuhisa <kaz@asada.sytes.net>]

  *) Performance enhancements for access logger when using
     default timestamp formatting  [Brian Pane]

  *) Added EnableMMAP config directive to enable the server
     administrator to disable memory-mapping of delivered files
     on a per-directory basis.  [Brian Pane]

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  *) Performance enhancements for mod_setenvif  [Brian Pane]

  *) Fix a mod_ssl build problem on OS/390.  [Jeff Trawick]

  *) Fixed If-Modified-Since on Win32, which would give false positives
     because of the sub-second resolution of file timestamps on that
     platform.  [Cliff Woolley]

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  *) Reverse the hook ordering for mod_userdir and mod_alias so
     that Alias/ScriptAlias will override Userdir.  PR 8841
     [Joshua Slive]

  *) Move mod_deflate out of experimental and into filters.
     [Justin Erenkrantz]

  *) Get proxy CONNECT basically working.  [Jeff Trawick]

  *) Fix mod_rewrite hang when APR uses SysV Semaphores and
     RewriteLogLevel is set to anything other than 0.  PR: 8143
     [Aaron Bannert, Cliff Woolley]

  *) Fix byterange requests from returning 416 when using dynamic data
     (such as filters like mod_include).  [Justin Erenkrantz]

  *) Allow mod_rewrite's set of "int:" internal RewriteMap functions
     to be extended by third-party modules via an optional function.
     [Tahiry Ramanamampanoharana <nomentsoa@hotmail.com>, Cliff Woolley]

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  *) Fix mod_include expression parser's handling of unquoted strings
     followed immediately by a closing paren.  PR 8462.  [Brian Pane]

  *) Remove autom4te.cache in 'make distclean'.
     [Thom May <thom@planetarytramp.net>]

  *) Fix generated httpd.conf to respect layout for LoadModule lines.
     PR 8170.  [Thom May <thom@planetarytramp.net>]

  *) Win32: During a graceful restart, threads in the new process
     were accessing scoreboard slots still in use by active threads in 
     the the old process. [Bill Stoddard]
Changes with Apache 2.0.36

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  *) Fix some minor formatting issues with ab. Part of this is
     in reference to PR 8544, the rest I noticed while testing
     the PR fix. [Paul J. Reder]

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  *) Fix a case where an invalid pass phrase is entered and an
     error message is given, but the prompt is not shown again.
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     This left the user in an ambiguous state. PR 8320 [Paul J. Reder]
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  *) Close sockets on worker MPM when doing a graceless restart.
     [Aaron Bannert]

  *) Reverted a minor optimization in mod_ssl.c that used the vhost ID
     as the session id context rather that a MD5 hash of that vhost ID,
     because it caused very long vhost id's to be unusable with mod_ssl.
     PR 8572.  [Cliff Woolley]

  *) Fix the link to the description of the CoredumpDirectory 
     directive in the server-wide document.  PR 8643.  [Jeff Trawick]

  *) Fixed SHMCB session caching.  [Aaron Bannert, Cliff Woolley]

  *) Synced with remaining changes from mod_ssl 2.8.8-1.3.24:
     - Avoid SIGBUS on sparc machines with SHMCB session caches
     - Allow whitespace between the pipe and the name of the
     program in SSLLog "| /path/to/program".  [Cliff Woolley]

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  *) Introduce mod_ext_filter and mod_deflate experimental modules
     to the Win32 build (zlib sources must be in srclib\zlib.)
     [William Rowe]

  *) Changes to the worker MPM's queue management and thread
     synchronization code to reduce mutex contention  [Brian Pane]

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  *) Don't install *.in configuration files since we already install
     *-std.conf files.  [Aaron Bannert]

  *) Many improvements to the threadpool MPM.  [Aaron Bannert]

  *) Fix subreqs that are promoted via fast_redirect from having invalid
     frec->r structures.  This would cause subtle errors later on in
     request processing such as seen in PR 7966.  [Justin Erenkrantz]

  *) More efficient pool recycling logic for the worker MPM [Brian Pane]

  *) Modify the worker MPM to not accept() new connections until
     there is an available worker thread. This prevents queued
     connections from starving for processing time while long-running
     connections were hogging all the available threads.  [Aaron Bannert]

  *) Convert the worker MPM's fdqueue from a LIFO back into a FIFO.
     [Aaron Bannert]

  *) Get basic HTTP proxy working on EBCDIC machines.  [Jeff Trawick]

  *) Allow mod_unique_id to work on systems with no IPv4 address
     corresponding to their host name.  [Jeff Trawick]

  *) Fix suexec behavior with user directories.  PR 7810.
     [Colm <colmmacc@redbrick.dcu.ie>]

  *) Reject a blank UserDir directive since it is ambiguous.  PR 8472.
     [Justin Erenkrantz]

  *) Make mod_mime use case-insensitive matching when examining
     extensions on all platforms.  PR 8223.  [Justin Erenkrantz]

  *) Add an intelligent error message should no proxy submodules be
     valid to handle a request. PR 8407 [Graham Leggett]

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  *) Major improvements in concurrent processing for AB by enabling
     non-blocking connect()s and preventing APR from doing blocking
     read()s. Also implement fatal error checking for apr_recv().
     [Aaron Bannert]

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  *) Fix Win32 NTFS Junctions (symlinks).  PR 8014  [William Rowe]

  *) Fix Win32 'short name' aliases in httpd.conf directives.
     PR 8009  [William Rowe]

  *) Fix generation of default httpd.conf when the layout paths are
     disjoint.  PR 7979, 8227.  [Justin Erenkrantz]
  *) Swap downgrade-1.0 and force-response-1.0 conditional checks so
     that downgraded responses can have force-response.  PR 8357.
     [Justin Erenkrantz]

  *) Fix perchild MPM so that it can be configured with the move to the
     experimental directory.  [Scott Lamb <slamb@slamb.org>]

  *) Fix perchild MPM so that it uses ap_gname2id for groups instead of
     ap_uname2id. [Scott Lamb <slamb@slamb.org>]

  *) Fix AcceptPathInfo. PR 8234  [Cliff Woolley]

  *) SECURITY: Added the APLOG_TOCLIENT flag to ap_log_rerror() to