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Changes with Apache 2.0.49
  *) mod_usertrack no longer inspects the Cookie2 header for
     the cookie name. PR 11475.  [Chris Darrochi <chrisd pearsoncmg.com>]

  *) mod_usertrack no longer overwrites other cookies.
     PR 26002.  [Scott Moore <apache nopdesign.com>]

  *) worker MPM: fix stack overlay bug that could cause the parent
     process to crash.  [Jeff Trawick]

  *) Win32: Add Win32DisableAcceptEx directive. This Windows
     NT/2000/CP directive is useful to work around bugs in some 
     third party layered service providers like virus scanners, 
     VPN and firewall products, that do not properly handle 
     WinSock 2 APIs.  Use this directive if your server is issuing
     AcceptEx failed messages.
     [Allan Edwards, Bill Rowe, Bill Stoddard, Jeff Trawick]
  *) Make REMOTE_PORT variable available in mod_rewrite.
     PR 25772.  [André Malo]

  *) Fix a long delay with CGI requests and keepalive connections on
     AIX.  [Jeff Trawick]

  *) mod_autoindex: Add 'XHTML' option in order to allow switching between
     HTML 3.2 and XHTML 1.0 output. PR 23747.  [André Malo]

  *) Add XHTML Document Type Definitions to httpd.h (minor MMN bump).
     [André Malo]

  *) mod_ssl: Advertise SSL library version as determined at run-time rather
     than at compile-time.  PR 23956.  [Eric Seidel <seidel apple.com>]

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  *) mod_ssl: Fix segfault on a non-SSL request if the 'c' log
     format code is used.  PR 22741.  [Gary E. Miller <gem rellim.com>]

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  *) Fix build with parallel make.  PR 24643.  [Joe Orton]

  *) mod_rewrite: In external rewrite maps lookup keys containing
     a newline now cause a lookup failure. PR 14453.
     [Cedric Gavage <cedric.gavage unixtech.be>, André Malo]

  *) Backport major overhaul of mod_include's filter parser from 2.1.
     The new parser code is expected to be more robust and should
     catch all of the edge cases that were not handled by the previous one.
     The 2.1 external API changes were hidden by a wrapper which is
     expected to keep the API backwards compatible.  [André Malo]

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  *) Add a hook (insert_error_filter) to allow filters to re-insert
     themselves during processing of error responses. Enable mod_expires
     to use the new hook to include Expires headers in valid error
     responses. This addresses an RFC violation. It fixes PRs 19794,
     24884, and 25123. [Paul J. Reder]

  *) Add Polish translation of error messages.  PR 25101.
     [Tomasz Kepczynski <tomek jot23.org>]

  *) Add AP_MPMQ_MPM_STATE function code for ap_mpm_query. (Not yet
     supported for BeOS, OS/2, or Win32 MPMs.)  [Jeff Trawick,
     Brad Nicholes]

  *) Add mod_status hook to allow modules to add to the mod_status
     report.  [Joe Orton]

  *) Fix htdbm to generate comment fields in DBM files correctly.
     [Justin Erenkrantz]

  *) mod_dav: Use bucket brigades when reading PUT data. This avoids
     problems if the data stream is modified by an input filter. PR 22104.
     [Tim Robbins <tim robbins.dropbear.id.au>, André Malo]

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  *) Fix RewriteBase directive to not add double slashes.  [André Malo]

  *) Improve 'configure --help' output for some modules.  [Astrid Keßler]

  *) Correct UseCanonicalName Off to properly check incoming port number.
     [Jim Jagielski]

  *) Fix slow graceful restarts with prefork MPM.  [Joe Orton]

  *) Fix a problem with namespace mappings being dropped in mod_dav_fs;
     if any property values were set which defined namespaces these
     came out mangled in the PROPFIND response.  PR 11637.
     [Amit Athavale <amit_athavale persistent.co.in>]

  *) mod_dav: Return a WWW-auth header for MOVE/COPY requests where
     the destination resource gives a 401.  PR 15571.  [Joe Orton]

  *) SECURITY: CAN-2003-0020 (cve.mitre.org)
     Escape arbitrary data before writing into the errorlog. Unescaped
     errorlogs are still possible using the compile time switch
     "-DAP_UNSAFE_ERROR_LOG_UNESCAPED".  [Geoffrey Young, André Malo]
  *) mod_autoindex / core: Don't fail to show filenames containing
     special characters like '%'. PR 13598.  [André Malo]
 
  *) mod_status: Report total CPU time accurately when using a threaded
     MPM.  PR 23795.  [Jeff Trawick]

  *) Fix memory leak in handling of request bodies during reverse
     proxy operations.  PR 24991. [Larry Toppi <larry.toppi citrix.com>]

  *) Win32 MPM: Implement MaxMemFree to enable setting an upper
     limit on the amount of storage used by the bucket brigades
     in each server thread. [Bill Stoddard]
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  *) Modified the cache code to be header-location agnostic. Also
     fixed a number of other cache code bugs related to PR 15852.
     Includes a patch submitted by Sushma Rai <rsushma novell.com>.
     This fixes mod_mem_cache but not mod_disk_cache yet so I'm not
     closing the PR since that is what they are using. [Paul J. Reder]

  *) complain via error_log when mod_include's INCLUDES filter is
     enabled, but the relevant Options flag allowing the filter to run
     for the specific resource wasn't set, so that the filter won't
     silently get skipped. next remove itself, so the warning will be
     logged only once [Stas Bekman, Jeff Trawick, Bill Rowe]

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  *) mod_info: HTML escape configuration information so it displays 
     correctly. PR 24232. [Thom May]
     
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  *) Restore the ability to add a description for directories that
     don't contain an index file.  (Broken in 2.0.48) [André Malo]

  *) Fix a problem with the display of empty variables ("SetEnv foo") in
     mod_include.  PR 24734  [Markus Julen <mj zermatt.net>]

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  *) mod_log_config: Log the minutes component of the timezone correctly.
     PR 23642.  [Hong-Gunn Chew <hgbug gunnet.org>]

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  *) mod_proxy: Fix cases where an invalid status-line could be sent 
     to the client.  PR 23998.  [Joe Orton]

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  *) mod_ssl: Fix segfaults at startup if other modules which use OpenSSL
     are also loaded.  [Joe Orton]

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  *) mod_ssl: Use human-readable OpenSSL error strings in logs; use
     thread-safe interface for retrieving error strings.  [Joe Orton]

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  *) mod_expires: Initialize ExpiresDefault to NULL instead of "" to
     avoid reporting an Internal Server error if it is used without
     having been set in the httpd.conf file. PR: 23748, 24459
     [Andre Malo, Liam Quinn  <liam htmlhelp.com>]

  *) mod_autoindex: Don't omit the <tr> start tag if the SuppressIcon
     option is set. PR 21668.  [Jesse Tie-Ten-Quee <highos highos.com>]

  *) mod_include no longer allows an ETag header on 304 responses.
     PR 19355. [Geoffrey Young <geoff apache.org>, André Malo]

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  *) EBCDIC: Convert header fields to ASCII before sending (broken
     since 2.0.44). [Martin Kraemer]

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  *) Fix the inability to log errors like exec failure in
     mod_ext_filter/mod_cgi script children.  This was broken after 
     such children stopped inheriting the error log handle.  
     [Jeff Trawick]

  *) Fix mod_info to use the real config file name, not the default
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     config file name.  [Aryeh Katz <aryeh secured-services.com>]
  *) Set the scoreboard state to indicate logging prior to running 
     logging hooks so that server-status will show 'L' for hung loggers
     instead of 'W'.  [Jeff Trawick]

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Changes with Apache 2.0.48
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  *) SECURITY [CAN-2003-0789]: mod_cgid: Resolve some mishandling of
     the AF_UNIX socket used to communicate with the cgid daemon and
     the CGI script.  [Jeff Trawick]
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  *) SECURITY [CAN-2003-0542]: Fix buffer overflows in mod_alias and 
     mod_rewrite which occurred if one configured a regular expression 
     with more than 9 captures.  [André Malo]
  *) mod_include: fix segfault which occured if the filename was not
     set, for example, when processing some error conditions.
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     PR 23836.  [Brian Akins <bakins web.turner.com>, André Malo]
  *) fix the config parser to support <Foo>..</Foo> containers (no
     arguments in the opening tag) supported by httpd 1.3. Without
     this change mod_perl 2.0's <Perl> sections are broken.
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     ["Philippe M. Chiasson" <gozer cpan.org>]
  *) mod_cgid: fix a hash table corruption problem which could
     result in the wrong script being cleaned up at the end of a
     request.  [Jeff Trawick]

  *) Update httpd-*.conf to be clearer in describing the connection
     between AddType and AddEncoding for defining the meaning of
     compressed file extensions. [Roy Fielding]

  *) mod_rewrite: Don't die silently when failing to open RewriteLogs.
     PR 23416.  [André Malo]

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  *) mod_rewrite: Fix mod_rewrite's support of the [P] option to send
     rewritten request using "proxy:". The code was adding multiple "proxy:"
     fields in the rewritten URI. PR: 13946.
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     [Eider Oliveira <eider bol.com.br>]
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