Ensure http2 follows http in the meaning of
  status WRITE (meaning 'in the request processing
  phase' even if still consuming the request body,
  not literally in a 'now writing' state).

  Ensure a number of MPMs and the h2 connection io
  no longer clobber the request status line during
  state-only changes.  While at it, clean up some
  very ugly formatting and unnecessary decoration,
  and avoid the wordy _from_conn() flavor when we
  are not passing a connection_rec.

  Ensure the useragent_ip is only used in the case
  where it has been initialized, fall back on the
  connection's remote_ip if the status is accidently
  updated from an uninitialized request_rec.

Revert to 2.4.1 behavior and null the request and vhost as appropriate.
PR: 59333
Submitted by: wrowe
Reviewed by: wrowe, ylavic, rpluem


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figure something out for 2.4.



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a new section on the right panel containing three links: 
- httpd changelog 
- Bugzilla issues related to the module
- Open a bugzilla issue related to the module
This commit also fixes a minor inconsistency for the "comments" link, that is 
now always displayed under "See also"



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Added a reference to the mpm-event's doc about the fact that it does not require any mpm-accept mutex set.

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mod_http2: fixes connection shutdown and updates log tags


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(and adjust version info in CHANGES, ap_mmn comment, core.xml)

core: New CGIVar directive can configure REQUEST_URI to represent the
current URI being processed instead of always the original request.

Submitted by: trawick
Reviewed by: ylavic, jim


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scoreboard/status: Keep previous worker connection/request data when idle as
prior to 2.4.20.


scoreboard/status: follow up to r1739008.
Restore (completely) pre-2.4.20 behaviour w.r.t. preserved values.
r1739008 was still unnessessarily blanking some values for the time of
BUSY_READ -> BUSY_WRITE (with blocking MPMs).


scoreboard/status: follow up to 1739146.
Comment not needed anymore...


Clarify CHANGES entry, including the correct version for the
restored behaviour.

Submitted by: ylavic
Reviewed/backported by: jim


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  Replace nonsense statement in the backport proposal (the backport has
  merit, but for an altogether different reason).

  http2-wg has no impact on HTTP/1.1 protocol, and Upgrade: request and
  response in this case is defined by the HTTP/1.1 RFC, alone.  An Upgrade
  header in an HTTP/2.0 stream is entirely under the scope of HTTP/2.0 RFC.



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Fix link to distcache. 
http://www.distcache.org/ --> http://distcache.sourceforge.net/

(r1740717 in trunk)

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