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Synch a bit with trunk

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(r1850545 in trunk)

+ fix a typo to synch with trunk

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(r1850545 in trunk)

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(r1850539 in trunk)

+ remove a trailing space to synch with trunk

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Backport of r1850098 from trunk.


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  *) mod_md: incorrect behaviour when synchronizing ongoing ACME challenges
     have been fixed. [Michael Kaufmann, Stefan Eissing]



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I only tested, added a test case and proposed for backport.

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core: Fix incorrect substitution of env vars in directives containing multiple env vars.

In ap_resolve_env(), the string returned from getenv() should be copied since
the returned string may be statically allocated.

This fixes an issue where the value for the last env var is substituted for all
env vars in a directive containing multiple env vars.

Submitted by: hwibell
Reviewed by: hwibell, covener, jim


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* modules/ssl: Add some missing logno tags.


* modules/ssl/ssl_engine_pphrase.c (ssl_load_encrypted_pkey):
  Simplify code, no functional change.


* modules/slotmem/mod_slotmem_shm.c (restore_slotmem): Remove
  redundant assignment (clang warning), the apr_file_eof(fp)=>APR_EOF
  case assigns rv to APR_EOF and then to APR_SUCCESS after already.


* modules/mappers/mod_negotiation.c (set_language_quality): Remove
  redundant branch (warning from Coverity).

Submitted by: jorton
Reviewed by: jailletc36, icing, jorton, jim


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PR62311: only create the rewritelock when needed

Submitted By: Hank Ibell <hwibell gmail.com>
Committed By: covener



Submitted by: covener
Reviewed by: jailletc36, icing (by inspection), covener


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   in the expression does NOT match. In this case val is NULL
   and we should just set the value for the environment variable
   like in the pattern case.
+1: jailletc36, jim, minfrin


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   an absolute URI on the request line
+1: jailletc36, jim, minfrin


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   trunk patch: http://svn.apache.org/r1843244
+1: elukey, jim, minfrin


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   just like worker.
+1: covener, jim, minfrin


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   connections, and PR 61519 where $HTTPS was incorrect for the
   "SSLEngine optional" case.
+1: jorton, jim, minfrin


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         not cleared beforehand.
+1: icing, jim, minfrin


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This messes-up error handling performed in 'ssl_io_filter_error()'
+1: ylavic, jim, minfrin


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