PIPE_BUF in mod_info in the rare case that
PIPE_BUF is defined.

Backport of 1857515 from trunk.
Proposed by: rjung
Backported by: rjung
Reviewed by: rjung, jailletc36, jim


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(r1859038 in trunk )

+ some trailing spaces removed to synch with trunk

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Add security note on CoreDumpDirectory for Linux.

Reviewed by: icing, elukey


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  *) mod_md: Store permissions are enforced on file creation, enforcing restrictions in
     spite of umask. Fixes <https://github.com/icing/mod_md/issues/117>. [Stefan Eissing]



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modules/filters/config.m4: Make libxml2's inclusion of unicode/*.h files
a non-fatal warning/error under maintainer-mode.



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rpm: Add mod_socache_redis to the build.

Submitted by: minfrin


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It was part of http://home.apache.org/~jim/patches/socache_redisv2.patch but is not in r1855817.

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add .mak/dep for command line build


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