Prevent an external proxy from presenting an internal proxy
in mod_remoteip.c. PR 55962.

Submitted by: mrumph
Reviewed/backported by: jim


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 - fix relase # in MMN
 - compatibility is for expression only


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allow expressions to be used in SetHandler. Opt-in with expr= prefix.



from feedback, assume all parameters to SetHandler are expressions.

I couldnt come up with a plausible handler name that was an 
invalid expression.


1726233 temporarily broke UDS r->handler case sensitivity


1726233 temporarily broke UDS r->handler case sensitivity

Submitted by: covener
Reviewed/backported by: jim


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* Ensure that proto_num and protocol is set in another "error out early" edge
  case. This can happen with invalid CONNECT requests as described in the PR.

PR: 58929

Submitted by: rpluem
Reviewed/backported by: jim


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handling TIMEUP on SSL inputs by allowing later retries
Submitted by: icing
Reviewed/backported by: jim


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Fix missing Upgrade headers on OPTION * requests, PR58688
Submitted by: wrowe
Reviewed/backported by: jim


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* Since r1724820 two modules, mod_http2 and mod_ssl, call APACHE_CHECK_OPENSSL,
  with mod_http2 doing it first. Because the result of APACHE_CHECK_OPENSSL
  is cached this causes MOD_LDFLAGS and MOD_CFLAGS to remain unset for mod_ssl
  which in turn causes it not to be linked against Openssl which means that
  mod_ssl cannot be loaded if the Openssl libs haven't been loaded by other means
  already.
  Fix this by caching the values for MOD_LDFLAGS and MOD_CFLAGS created during
  the first run and set them in the cached case.

Submitted by: rpluem
Reviewed/backported by: jim


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detected by coccinelle).

There are some more but they are easier to
backport once these here are applied.

Backport of r1725392, r1725394, r1725395
and r1725468 from trunk.

Submitted by: rjung
Reviewed by: jim, ylavic


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Fix some duplicate definitions
Submitted by: mrumph
Reviewed/backported by: jim


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No need to search twice for the same value.
Submitted by: jailletc36
Reviewed/backported by: jim


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