+ synch with trunk

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Thanks Stefan.


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disable any openssl use until configure fix is backported, linking gets messed up when multiple places have openssl

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Update Perl FCGI examples to work with current version of module


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Fix warnings:
modules/http2/h2_util.c|174| warning: suggest parentheses around ‘+’ in operand of ‘&’
modules/http2/h2_util.c|176| warning: suggest parentheses around ‘+’ in operand of ‘&’

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implicit.



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Backport of r1726086 from trunk.


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  *) mod_proxy_fcgi: Suppress HTTP error 503 and message 01075, 
     "Error dispatching request", when the cause appears to be 
     the client closing the connection. 

PR58118.  

Submitted By: Tobias Adolph <adolph lrz.de>
Committed By: covener


Submitted by: covener
Reviewed/backported by: jim


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flush errors are TRACE1 in the core output filter now.



Remove APLOGNO after moving log message to
TRACE1 in r1724847.

Submitted by: covener, rjung
Reviewed/backported by: jim


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  *) mod_rewrite: Avoid looping on relative substitutions that
     result in the same filename we started with. PR 58854.
     [Eric Covener]


Previously, the comparison of old and new filename happened before
some prefixes might be added.


Submitted by: covener
Reviewed/backported by: jim


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Add common extension "m4a" for MPEG 4 Audio to
mime.types.

As a reference see Wikipedia:
https://en.wikipedia.org/wiki/MPEG-4_Part_14#.MP4_versus_.M4A

PR: 57895

Submitted by: rjung
Reviewed/backported by: jim


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Do not use the magic string "directory". Use the corresponding global variable as in all other places of the module.
Submitted by: jailletc36
Reviewed/backported by: jim


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Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.

Use 'ap_array_str_contains' to simplify code.
Submitted by: jailletc36
Reviewed/backported by: jim


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Use 'apr_pstrmemdup' instead of 'apr_pstrndup' when applicable in order to save a few cycles.

Use 'apr_pstrmemdup' instead of 'apr_pstrndup' when applicable in order to save a few cycles.

Fix some minor style issue.
Submitted by: jailletc36
Reviewed/backported by: jim


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