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Fix worker and URL matching to be case sensitive
when needed.


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* configure.in: Require apr >= 1.2.0 and apr-util >= 1.2.0.

* configure.in: Move apr/apr-util version checks later to fix in-tree
apr/apr-util build failures due to $EGREP not getting set early
enough.



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* build/config_vars.sh.in: Prepend DESTDIR to paths to installed
apr/apu-config scripts.

* build/config_vars.sh.in: Check for the *-config scripts both at the
DESTDIR-relocated path and at the not-relocated path, to cope with
both builds with and without the bundled APR.

Submitted by: Torsten Foertsch <torsten.foertsch gmx.net>, jorton


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Fix handling of unknown state tokens in If headers:

* modules/dav/main/mod_dav.h: Add dav_if_unknown to dav_if_state_type
enum.

* modules/dav/main/util.c (dav_add_if_state): Set returned type to
dav_if_unknown for an unknown state token.
(dav_validate_resource_state): Evaluate dav_if_unknown to fail
match unless in a Not condition.

PR: 37288


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- Voice my opinion on the other documented release show stoppers.


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Add a note about sendfile on Itanium


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perchild, threadpool, leader


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SQL config in .htaccess wont work.


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Document the mod_cache / mod_authz_host problem.



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Corrects a regression from 2.0.


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Minor language fixes:

    * Correct a grammar mistake
    * Make my own English more cromulent
    * Use GB to express Gigabytes rather than Gb, which usually
      means Gigabits.



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make mod_dbd.h available for all who need it

Submitted by: nd
Reviewed by: jorton


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* Fix PR37100 (SEGV in mod_proxy_ajp), by sending the data up the filter
  chain immediately instead of spooling it completely before passing it
  to the filter chain. It contains a bandaid to handle intentional
  flushes from Tomcat side. Further explanation in code and report.

  ajp.h:           Add ajp_msg_reuse prototype

  mod_proxy_ajp.c: Adjust logic of ap_proxy_ajp_request

  ajp_msg.c:       Add ajp_msg_reuse

  ajp_header.c:    Adjusting logic of ajp_read_header


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* Create new filters CACHE_OUT_SUBREQ / CACHE_SAVE_SUBREQ which only differ
  by the type (AP_FTYPE_CONTENT_SET-1) from CACHE_OUT / CACHE_SAVE
  (AP_FTYPE_CONTENT_SET+1). This ensures that subrequests to non local
  resources do not get stuck in the middle of the road with the contents
  only written to the temp file, because CACHE_OUT_SUBREQ / CACHE_SAVE_SUBREQ
  are inserted *before* the SUBREQ_CORE filter in the filter chain.


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* Fix PR36906 by not lower caseing the whole worker name. Only lower case the
  schema when storing the worker url. Thus preventing case sensitive URI's in
  BalancerMembers to get broken.


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Correct the port specified to match the example given.


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Talking to end-users has highlighted the new simpler default configuration
layout as a major selling point "feature" of 2.2. Add it to the list of
new features.


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fe80::/16 is for link-scope link-local addresses in IPv6, they are not
for goign in Listen directives, VirtualHost blocks, or anything like
that, and won't work.

Perform a mass search and replace: 2001:db8 for fe80. 2001:db8 is the
IPv6 documentation prefix. See RFC3849 for more details.



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