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Changes with Apache 2.3.13

  *) core: Add <ElseIf> and <Else> to complement <If> sections.
     [Stefan Fritsch]

  *) mod_ext_filter: Remove DebugLevel option in favor of per-module loglevel.
     [Stefan Fritsch]

  *) mod_include: Make the "#if expr" element use the new "ap_expr" expression
     parser. The old parser can still be used by setting the new directive
     SSILegacyExprParser. [Stefan Fritsch]

  *) core: Add some features to ap_expr for use by mod_include: a restricted
     mode that does not allow to bypass request access restrictions; new
     variables DOCUMENT_URI (alias for REQUEST_URI), LAST_MODIFIED; -A as an
     alias for -U; an additional data entry in ap_expr_eval_ctx_t for use by
     the consumer; an extensible ap_expr_exec_ctx() API that allows to use that
     data entry. [Stefan Fritsch]

  *) mod_include: Merge directory configs instead of one SSI* config directive
     causing all other per-directory SSI* config directives to be reset.
     [Stefan Fritsch]

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  *) mod_charset_lite: Remove DebugLevel option in favour of per-module
     loglevel. [Stefan Fritsch]

  *) core: Add ap_regexec_len() function that works with non-null-terminated
     strings. PR 51231. [Yehezkel Horowitz <horowity checkpoint com>]

  *) mod_authnz_ldap: If the LDAP server returns constraint violation,
     don't treat this as an error but as "auth denied". [Stefan Fritsch]

  *) mod_proxy_fcgi|scgi: Add support for "best guess" of PATH_INFO
     for SCGI/FCGI. PR 50880, 50851. [Mark Montague <mark catseye.org>,
     Jim Jagielski]

  *) mod_cache: When content is served stale, and there is no means to
     revalidate the content using ETag or Last-Modified, and we have
     mandated no stale-on-error behaviour, stand down and don't cache.
     Saves a cache write that will never be read.
     [Graham Leggett]

  *) mod_reqtimeout: Fix a timed out connection going into the keep-alive
     state after a timeout when discarding a request body. PR 51103.
     [Stefan Fritsch]

  *) core: Add various file existance test operators to ap_expr.
     [Stefan Fritsch]

  *) mod_proxy_express: New mass reverse-proxy switch extension for
     mod_proxy. [Jim Jagielski]

  *) configure: Fix script error when configuring module set "reallyall".
     [Rainer Jung]
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Changes with Apache 2.3.12

  *) configure, core: Provide easier support for APR's hook probe
     capability. [Jim Jagielski, Jeff Trawick]

  *) Silence autoconf 2.68 warnings.  [Rainer Jung]

  *) mod_authnz_ldap: Resolve crash when LDAP is used for authorization only
     [Scott Hill <shill genscape.com>]

  *) support: Make sure check_forensic works with mod_unique_id loaded
     [Joe Schaefer]

  *) Add child_status hook for tracking creation/termination of MPM child
     processes.  Add end_generation hook for notification when the last
     MPM child of a generation exits. [Jeff Trawick]

  *) mod_ldap: Make LDAPSharedCacheSize 0 create a non-shared-memory cache per
     process as opposed to disabling caching completely. This allows to use
     the non-shared-memory cache as a workaround for the shared memory cache
     not being available during graceful restarts. PR 48958. [Stefan Fritsch]

  *) Add new ap_reserve_module_slots/ap_reserve_module_slots_directive API,
     necessary if a module (like mod_perl) registers additional modules late
     in the startup phase. [Stefan Fritsch]

  *) core: Prevent segfault if DYNAMIC_MODULE_LIMIT is reached. PR 51072.
     [Torsten Förtsch <torsten foertsch gmx net>]

  *) WinNT MPM: Improve robustness under heavy load.  [Jeff Trawick]

  *) MinGW build improvements.  PR 49535.  [John Vandenberg 
     <jayvdb gmail.com>, Jeff Trawick]

  *) core: Support module names with colons in loglevel configuration.
     [Torsten Förtsch <torsten foertsch gmx net>]

  *) mod_ssl, ab: Support OpenSSL compiled without SSLv2 support.
     [Stefan Fritsch]

  *) core: Abort if the MPM is changed across restart.  [Jeff Trawick]

  *) mod_proxy_ajp: Add support for 'ProxyErrorOverride on'. PR 50945.
     [Peter Pramberger <peter pramberger.at>, Jim Jagielski]

  *) mod_proxy_fcgi: Add support for 'ProxyErrorOverride on'. PR 50913.
     [Mark Montague <mark catseye.org>, Jim Jagielski]

  *) core: Change the APIs of ap_cfg_getline() and ap_cfg_getc() to return an
     error code. Abort with a nice error message if a config line is too long.
     Partial fix for PR 50824. [Stefan Fritsch]

  *) mod_info: Dump config to stdout during startup if -DDUMP_CONFIG is
     specified. PR 31956. [Stefan Fritsch]
  *) Restore visibility of DEFAULT_PIDLOG to core and modules.  MPM 
     helper function ap_remove_pid() added.  [Jeff Trawick]
  *) Enable DEFAULT_REL_RUNTIMEDIR on Windows and NetWare.  [various]

  *) Correct C++ incompatibility with http_log.h.  [Stefan Fritsch, Jeff
     Trawick]

  *) mod_log_config: Prevent segfault. PR 50861. [Torsten Förtsch
     <torsten.foertsch gmx.net>]

  *) core: AllowEncodedSlashes new option NoDecode to allow encoded slashes
     in request URL path info but not decode them. Change behavior of option
     "On" to decode the encoded slashes as 2.0 and 2.2 do.  PR 35256,
     PR 46830.  [Dan Poirier]

  *) mod_ssl: Check SNI hostname against Host header case-insensitively.
     PR 49491.  [Mayank Agrawal <magrawal.08 gmail.com>]

  *) mod_ldap: Add LDAPConnectionPoolTTL to give control over lifetime
     of bound backend LDAP connections.  PR47634 [Eric Covener]
   
  *) mod_cache: Make CacheEnable and CacheDisable configurable per
     directory in addition to per server, making them work from within
     a LocationMatch. [Graham Leggett]

  *) worker, event, prefork: Correct several issues when built as
     DSOs; most notably, the scoreboard was reinitialized during graceful
     restart, such that processes of the previous generation were not
     observable.  [Jeff Trawick]
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Changes with Apache 2.3.11

  *) mod_win32: Added shebang check for '! so that .vbs scripts work as CGI.
     Win32's cscript interpreter can only use a single quote as comment char.
     [Guenter Knauf]

  *) mod_proxy: balancer-manager now uses POST instead of GET.
     [Jim Jagielski]

  *) core: new util function: ap_parse_form_data(). Previously,
     this capability was tucked away in mod_request. [Jim Jagielski]

  *) core: new hook: ap_run_pre_read_request. [Jim Jagielski]

  *) mod_cache: When a request other than GET or HEAD arrives, we must
     invalidate existing cache entities as per RFC2616 13.10. PR 15868.
     [Graham Leggett]

  *) modules: Fix many modules that were not correctly initializing if they
     were not active during server startup but got enabled later during a
     graceful restart. [Stefan Fritsch]

  *) core: Create new ap_state_query function that allows modules to determine
     if the current configuration run is the initial one at server startup,
     and if the server is started for testing/config dumping only.
     [Stefan Fritsch]

  *) mod_proxy: Runtime configuration of many parameters for existing
     balancers via the balancer-manager. [Jim Jagielski]

  *) mod_proxy: Runtime addition of new workers (BalancerMember) for existing
     balancers via the balancer-manager. [Jim Jagielski]

  *) mod_cache: When a bad Expires date is present, we need to behave as if
     the Expires is in the past, not as if the Expires is missing. PR 16521.
     [Co-Advisor <coad@measurement-factory.com>]

  *) mod_cache: We must ignore quoted-string values that appear in a
     Cache-Control header. PR 50199. [Graham Leggett]

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  *) mod_dav: Revert change to send 501 error if unknown Content-* header is
    received for a PUT request. PR 42978. [Stefan Fritsch]

  *) mod_cache: Respect s-maxage as described by RFC2616 14.9.3, which must
     take precedence if present. PR 35247. [Graham Leggett]
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  *) mod_ssl: Fix a possible startup failure if multiple SSL vhosts
     are configured with the same ServerName and private key file.
     [Masahiro Matsuya <mmatsuya redhat.com>, Joe Orton]

  *) mod_socache_dc: Make module compile by fixing some typos.
     PR 50735 [Mark Montague <mark catseye.org>]

  *) prefork: Update MPM state in children during a graceful stop or
     restart.  PR 41743.  [Andrew Punch <andrew.punch 247realmedia.com>]

  *) mod_mime: Ignore leading dots when looking for mime extensions.
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