Centralize hop-by-hop header handling in the disk caching code. Note that 'out' now has actual out semantics; hence the change in headers_in.

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the hop-by-hop rules of rfc 2616 along with the entity response
rules. To make sure that they stay in sync; and to make it easier
to add (http) caching modules - this change moves them all into
one place (cache_util) and exposes a in-bound and out-bound
version to operate on the headers.

In short: we retire ap_cache_cacheable_hdrs_out() which was used
for both in- and out-put headers; and replace it by a single
ap_cache_cacheable_headers() which understands the hop-by-hop
rules. And then wrap this into an in- and out-put specific 
ap_cache_cacheable_headers_in()/out() which we can teach things
about entity responses and so on.. The latter which will also 
merge error and ensure content-type. 

This API change bumps up the minor MM by one.    



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has been authenticated from a session.


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not be initialised.


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a mod_so environment.


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also.


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Incorperate feedback/requests for a bit more flexibility: 1)allow any domain and IP address for the SNI demonstration and 2) make the index.html sample files a bit easier to recognize.

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ap_setup_prelinked_modules() when modules linked in at compile time


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The current build of exports.c assumes that everything in include is part of the core, and so
putting the header there creates link errors.


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PR: 44799
Submitted by: Christian Wenz <christian wenz.org>
Reviewed by: rpluem



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ap_parse_request_body function out of the http module and into a
new module called mod_request, reducing the size of the core.


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when failing to write to the log file. 

Sometimes users have a hard time believing that their little log
file was really big enough to reach quota/filesystem/other limit
back at the time of the error.



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Move the initialization of rebind to the post_config handler so that it is done during the actual module load stage rather than the preload stage.  If done during the preload stage, the pool passed into the initialization function will be cleared and all allocations will be freed. 

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function, akin to dbd_param_flag().  Only needed when APR_HAS_THREADS.


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callback in case they are loaded individually without mod_authn_core.


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both inside and outside the location/directory sections, as suggested
by wrowe.


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