mod_ssl: follow up to r1527291.
Always prepend "!aNULL:!eNULL:" to SSL_DEFAULT_CIPHER_LIST (default for
SSL[Proxy]CipherSuite) since we support OpenSSL versions where this was
not yet included by default.

Submitted by: ylavic
Reviewed/backported by: jim


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Conform to RFC 7525, with additional suggestion to drop RSA Kx ciphers

Document RFC 7525 changes
Submitted by: wrowe
Reviewed/backported by: jim


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be normal


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mod_ssl: Check for RAND_egd() at configure time and only use it if present.
Fixes the build with LibreSSL which does not provide this function.

Submitted by: Bernard Spil <pil.oss gmail com>, stsp
Committed by: stsp


mod_ssl: Make the config parser complain if SSLRandomSeed specifies
the Entropy Gathering Daemon (EGD) as source while the underlying
SSL library does not support EGD (e.g. in case of LibreSSL).

Suggested and reviewed by: kbrand


Follow up to r1674542 and r1675410: CHANGES entry.
Submitted by: stsp, ylavic
Reviewed/backported by: jim


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Allow Require expr to work when the expression is quoted.

For example as appears in our documentation:
Require expr "%{TIME_HOUR} -ge 9 && %{TIME_HOUR} -le 17"

PR: 56235

Submitted by: breser
Reviewed/backported by: jim


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mod_dav: Avoid doing the walk on a COPY source for handling preconditions if
there are no preconditions provided.

* modules/dav/main/util.c:
  (dav_validate_request): avoid validating locks and ETags when there are
    no If headers providing them on a resource we aren't modifying.

Submitted by: breser
Reviewed/backported by: jim


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consistently output SSLCertificateChainFile deprecation warnings
Submitted by: kbrand
Reviewed/backported by: jim


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* Fix typo in error message

mpm_event(opt): zero is immutable.

Fix printf format spotted by cppcheck.
Untested.
Submitted by: rpluem, ylavic, jailletc36
Reviewed/backported by: jim


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