Document mod_proxy updates incl. new directives for reverse-proxied cookies


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#10722  Reverse proxying cookies
#15207  Proxy passing canonicalised URIs to backend
#16812  Case-insensitivity of proxypassreverse
#19317  Canonicalised URI causing infinite loop
#20372  AllowEncodedSlashes
May also fix 13577 (untested)

This is really two fixes: 10722 and 15207; the others are trivial consequences.
To make review easier, the simpler fix (#15207) is entirely contained in
#ifdef FIX_15207 (new code) and
#ifndef FIX_15207 (removed code)


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Reviewed by:	jerenkrantz


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Replace the thread reader/writer lock that protects the shared memory cache to a global mutex so that the shared memory is protected across processes.


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Make sure that the shared memory pointers are propagated down through the various caches that are created


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Update inflate_out_filter to support gzip compression flags.


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as static.


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in the httpd process

this requires a new APR feature (APR_SHELLCMD_ENV), just added to apr 1.0-dev


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from being logged for I_INSIST_ON_EXTRA_CYCLES_FOR_CLF_COMPLIANCE
processing.

PR:             29696
Submitted by:   Alois Treindl <alois astro.ch>
Reviewed by:	Jeff Trawick


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Get rid of the race conditions by first checking to make sure that a duplicate node does not already exist before inserting nodes into the different caches.


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so that static modules can push Defines values when registering
hooks just like DSO modules can
Submitted by:	philippe chiasson
Reviewed by:	geoff


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Enhance the util_ldap cache-info page to display the current contents of the search, compare and dn_compare caches


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	in case a switch between standard and daylight savings time
	occurred.  (correction to previous code courtesy of Uli Zappe.)

PR:		24417
Submitted by:	Uli Zappe <uli ritual.org>


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Content-Range in r->headers_out, so that the byterange filter knows to
do nothing for a CGI script which produced a content-range.


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brigade for sending output after passing on the current one.


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the temporary brigade if it wasn't passed on to the next filter.


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handling: don't re-use a passed brigade.


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Added new field in apr_procattr_t and cgi_exec_info_t structures to support loading in current or new address space (NetWare ONLY).
Replaced changes that added APR_PROGRAM_ADDRSPACE committed 6/11/04.
Reviewed by Brad Nicholes


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Instead there's a new optional flag for the Header directive
('always'), which keeps the former ErrorHeader functionality.

The opposite flag to 'always' is 'onsuccess'. So the new directives are written
as:

Header set foo bar
# which is the same as
Header onsuccess set foo bar
# and a subset of
Header always set foo bar
# which is what the ErrorHeader directive did.

Reviewed by: Brad Nicholes


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