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Move draft-ietf-httpbis-p1-messaging-23 fixes to proposed backport (was being worked) like in 2.2.x, with my +1 vote.

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http://httpd.apache.org/docs/2.4/mod/mod_headers.html#comment_2245



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  *) mod_rewrite: Add RewriteOptions InheritDown, InheritDownBefore,
     and IgnoreInherit to allow RewriteRules to be pushed from parent scopes
     to child scopes without explicitly configuring each child scope.
     PR56153. 

Submitted By: Edward Lu
Committed By: covener

Submitted by: covener
Reviewed/backported by: jim


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PR: 54852. Only use a dummy_connection for idle processes
Reviewed/backported by: jim


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              APR_INCOMPLETE. PR 55475.
     trunk patch: http://svn.apache.org/r1538776
          2.4.x patch: https://people.apache.org/~ylavic/2.4.x-http_filter_incomplete.patch



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FreeBSD: Disable IPv4-mapped listening sockets by default for versions
5+ instead of just for FreeBSD 5.

PR: 53824

Submitted by: trawick
Reviewed/backported by: jim


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handle POLLERR/POLLHUP during poll() to avoid high CPU busy loop.

Submitted By: Joffroy Christen <joffroy.christen solvaxis com>, Eric Covener]
Committed By: covener
 

Submitted by: covener
Reviewed/backported by: jim


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* server/protocol.c (r_flush): Use int return type as per declaration
  of apr_vformatter(); no functional change.


Use %pm in order to save 8k of stack in 'ap_pcfg_strerror'

s/apr_pstrndup/apr_pstrmemdup/ when applicable

follow-up to r1096569:

remove unnecessary total_modules calculation

Submitted by: jorton, jailletc36, jailletc36, trawick
Reviewed/backported by: jim


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