mod_http2: enable re-use of slave connections again.


mod_http2: fixed slave connection keepalives counter.

Submitted by: icing
Reviewed by: icing, ylavic, jim


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  *) http: Fix possible empty response with mod_ratelimit for HEAD requests.



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* dav_stream_response processes data that has been allocated from the propdb
  pool. Hence close the propdb *after* dav_stream_response which clears thei
  probdb pool.

Submitted by: rpluem
Reviewed by: jailletc36, icing, ylavic


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mod_ssl: AH10129 from ERR to DEBUG level.

No error here, just debug information.

Submitted by: ylavic
Reviewed by: ylavic, rpluem, jorton


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MPMs unix: bind the bucket number of each child to its slot number

We need not remember each child's bucket number in SHM for restarts, for the
lifetime of the httpd main process the bucket number can be bound to the slot
number such that: bucket = slot % num_buckets.

This both simplifies the logic and helps children maintenance per bucket in
threaded MPMs, where previously perform_idle_server_maintenance() could create
or kill children processes for the buckets it was not in charge of.

Submitted by: ylavic
Reviewed by: ylavic, rpluem, jorton


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Clarify the existing behavior.

* modules/generators/mod_info.c: Constify fixed tables and mark
  module-private global variables static. No functional change.

Axe an old and apparently out-dated comment.

There is a typo in the comment.
HN_UPDATE_SEC has been renamed HM_UPDATE_SEC.
The TODO seems to have been taken into account in r759862.

* modules/filters/mod_deflate.c
  (deflate_out_filter): Fix typo setting output note. (Coverity warning)
  (deflate_in_filter): Fix redundant assignment. (clang warning)

* modules/md/md_acme_authz.c (md_acme_authz_update): Fix typo in log
  message.

* modules/dav/main/mod_dav.c (dav_method_propfind): Tag the scratchpool.

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


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Fix a race condition.  Authentication with valid credentials could be
refused in case of concurrent accesses from different users.

PR: 63124
Submitted by: Simon Kappel <simon.kappel axis.com>
Reviewed by: jailletc36, icing, jorton


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- Be consistent with the case used for AuthLDAPURL. Use uppercase URL, as in the code in order to fix syntax highlight issues.
- Fix the case of AuthLDAPSubGroupAttribute in <default>, so that quickreference.xsl works as expected

Fix some other small layout issues.

(r1853664 in trunk)

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