This fixes the cache code so that responses can be cached if they have
 an Expires header but no Etag or Last-Modified headers. PR 23130.
 Submitted by: <bjorn@exoweb.net>
 Reviewed by: Paul J. Reder


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Fix a couple of AIX xlc_r compiler issues in the cache code I previously
committed. [Paul J. Reder]


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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]


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use APR'd dbm. mod_ssl had hacked sdbm for larger sizes.

PR:
Obtained from:
Submitted by:
Reviewed by:


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Submitted by:	Aryeh Katz
Reviewed by:	Jeff Trawick


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be available which is required for the recent bucket_alloc changes.


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  By rights this should be a subst - but it gets us building.
  Need to revisit pulling this and httpd-std.conf.in so we can
  drop all win32 specifics.


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  Simplify includes - we always (in HTTPD 2.1 forward) are looking
  for the openssl/foo.h headers explicitly.  Fix the abs.dsp build
  to define HAVE_OPENSSL instead of USE_SSL so the correct headers
  are included upfront.


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  Account for apr-1.lib and apriconv-1.lib changes, HTTPD 2.1/APR 1.0 only.


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what was in 2.0 because it was more recent, but it turns out that was
the wrong choice.  reverts to 2.0 to follow


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PR:
Obtained from:
Submitted by:
Reviewed by:


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to debug, as it is of interest only to developers.

PR:                9011


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explicit bucket_alloc_destroy(), which is redundant


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MaxClients has to be lowered due to the setting of ServerLimit.


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because of the changes to the argument lists of apr_mmap_dup and apr_socket_create,
2.1-dev won't build with apr and apr-util's 0.9 branch anymore


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of what we get from ap_get_brigade and set a nugget for our next call to
pick up on.


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library code as well as the reason code when looking for the
plain-HTTP-request error.

Submitted by: Stephen Henson <steve@openssl.org>


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<!--#config echomsg="..." -->


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expression optimization/debugging


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when necessary.  Which is to say that it's necessary in all cases except
for prefork, where the change to apr-util to have it use the allocator
from the pool passed in is already sufficient.

Reviewed by:	Jean-Jacques Clar, Sander Striker, Brad Nicholes


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mod_dav_lock.c:72: warning: no previous prototype for `dav_generic_get_lockdb_path'
locks.c: In function `dav_generic_really_open_lockdb':
locks.c:356: warning: unused variable `db'
locks.c: In function `dav_generic_load_lock_record':
locks.c:606: warning: unused variable `buf'
locks.c: In function `dav_generic_remove_lock':
locks.c:1081: warning: unused variable `buf'


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- check more exactly whether the previous token is correct
- flip the tree from left-weighted to right-weighted, which is
  more natural and more efficient, since we don't need to loop
  up to the root, but just until the next and/or token.
- that way, flip the short circuit evaluation again to cut
  the right side now if possible...


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other MPM globals whenever HTTPD is started or restarted.


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invalid expressions. Checking these all manually would take a lot more
cycles than it'd save. Sorry.


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result of the enclosed expression. Since this expression will never
touched again during the tree-building stage, we can safely strip
TOKEN_GROUP from the tree and later evaluate the child directly.

The only side effect of this change is, that grouped strings on the
left side of EQ/NE/etc are now allowed (was invalid before), which
is acceptable IMHO (e.g. (foo bar baz) = zzzip)


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- the left side of such an operator can *only* be a string
- get a rid of the while-loop and re-organize the code
  to better reflect what we're actually doing there


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