Fix regression in check for cached response.

(Essentially) Submitted by: ylavic


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of DB lookup entries independently of the selected DB engine.  PR 46421.

Suggested by: Michel Stam <michel reverze net>
Proposed by: Steven whitson <steven.whitson gmail com>
Reviewed/Extended/Committed by: ylavic


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the OCSP response for a different certificate.  mod_ssl has an additional
global mutex, "ssl-stapling-refresh".

Not mentioned in CHANGES:

Stapling no longer uses a mutex when using a stapling cache
implementation which doesn't require it.  (A further, unrelated
code change to mod_ssl is required to allow the use of memcache 
as a stapling cachek, and I haven't tested with distcache; thus
it isn't clear if this helps in practice yet.)


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The proxy connection is NULL during prefetch, don't try to dereference it!


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according to the associated comment and the value really NULLed in
conn_pool_cleanup().


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whose address can still be reused.

This saves unnecessary socket pool destroy and creation at cleanup and reuse
time, plus the same initialization of conn->pool's associated data which can
be reused in that case.


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http://httpd.apache.org/docs/2.4/mod/mod_mime.html#comment_3996



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inclusion in 2.4.13


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it comes from an origin server, module or script.  

Instead of removing the C-L in ap_http_header_filter() after it has been
set by ap_content_length_filter(), just don't set it in the latter.


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and make it a static function called use_certificate_chain().


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and make it a static function called load_x509_info().


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ssl_init_proxy_certs() in ssl_engine_init.c. No functional change.
Review by: kbrand


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PR 57785


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there are no preconditions provided.

* modules/dav/main/util.c:
  (dav_validate_request): avoid validating locks and ETags when there are
    no If headers providing them on a resource we aren't modifying.


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Suggested by: kbrand


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Add compatibility note

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