* server/core.c (set_document_root): Improve error message for
  inaccessible docroot.

Submitted by: jorton
Reviewed/backported by: jim


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mod_rewrite: adding h2:// and h2c:// proxy schemes to absolute uri detection, patch by Evgeny Kotkov
Submitted by: icing
Reviewed/backported by: jim


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Save a few bytes in the conf pool.

The directive's names don't need to be duplicated in this pool when parsing the configuration file.

Either they match a known directive name and we can use it directly if needed. Otherwise, it is still possible to make a copy afterwards.
Submitted by: jailletc36
Reviewed/backported by: jim


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Add the <!--#comment ... --> syntax.
Idea from Rob.
Submitted by: jailletc36
Reviewed/backported by: jim


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directly to that section.



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ab: caseless matching for http heaers



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Synch with trunk, merge r1628690

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such that disabling either disables both, and that enabling either will
trigger the more comprehensive SSLProxyCheckPeerName behavior.

Only a single configuration remains to enable the legacy behavior, which
is to explicitly disable SSLProxyCheckPeerName and enable SSLProxyCheckPeerCN.

Major refactoring leads us to an alternate implementation for 2.4.21;
https://github.com/wrowe/patches/blob/master/fix_proxy_check_peer-2.4.x.patch


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Reviewed. build the html file

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(when you rename a parameter, make sure to update places where it is used...)

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Revert my previous doc commit about upstream DNS resolution caching in mod-proxy, there is still confusion in the users@ mailing list about what is the real behavior.  



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