mod_dav: Fix PR 55306.

Makes mod_dav no longer require that the lock token be provided when the
source of a COPY is locked.  The prior behavior was in violating of
RFC 4918 which says that the lock token is only required on resources
that may be modified by the method.

* modules/dav/main/mod_dav.h
  (DAV_VALIDATE_NO_MODIFY): New flag to be passed to dav_validate_* functions.

* modules/dav/main/mod_dav.c
  (dav_method_copymove): Use the new flag when calling dav_validate_request()
    on the COPY source.

* modules/dav/main/util.c
  (dav_validate_resource_state): Use the flag to decide to ignore if the lock
    token is not provided.

Submitted by: breser
Reviewed/backported by: jim


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Interpolation worked within the scheme portion of URLs for
ProxyPass and ProxyPassReverse until a fix to apr_uri_parse()
in APR-Util 1.5.2 closed the hole that had previously allowed
the necessary {} characters within the scheme.

Lack of support for interpolation within the scheme will be a
permanent limitation.

The mod_proxy documentation is updated to provide an alternate
configuration solution.

PR: 55315
Submitted by: Mike Rumph <mike.rumph oracle.com>
Tweaked by: trawick


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WinNT MPM: Exit the child if the parent process crashes or is terminated.

Submitted by: Oracle, via trawick

The original modification was made some years ago for Oracle HTTP Server
by an Oracle employee.  trawick made additional changes for style and
for trunk/2.4.x changes.


Follow up to r1526666:

Use SYNCHRONIZE instead of PROCESS_ALL_ACCESS because

a. it is sufficient
b. it avoids an issue where PROCESS_ALL_ACCESS is larger on
   newer SDKs, resulting in a run-time error when running on
   older Windows

Close the handle.

Submitted by: Ivan Zhakov <ivan visualsvn.com>

Submitted by: trawick
Reviewed/backported by: jim


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core: Don't truncate output when sending is interrupted by a signal,
      such as from an exiting CGI process.

PR: 55643

Submitted by: trawick
Reviewed/backported by: jim


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Add missing <code></code>

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core: Add missing Reason-Phrase in HTTP response headers.
PR 54946.

Submitted by: rjung
Reviewed/backported by: jim


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core: Add missing Reason-Phrase in HTTP response headers.
PR 54946.

Submitted by: rjung
Reviewed/backported by: jim


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Fix the null device name on Windows so that stderr can be sent
to the bit bucket.  (This logic is always hit when using an error
log provider.)

Submitted by: trawick
Reviewed/backported by: jim


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  * WinNT MPM: Follow MS docs on AcceptEx/GetAcceptExSockaddrs

Submitted By: trawick
Reviewed By: covener, gsmith



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  * core: Axe MSVC warning for http_protocol.c (issued about 128 times
          with a 2.4.x build)

Submitted By: trawick
Reviewed By: covener, gsmith



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  *) mod_rewrite: Make rewrite websocket aware to allow proxying.
     PR 55598. [Chris Harris <chris.harris kitware com>]

Submitted By: [Chris Harris <chris.harris kitware com>
Reviewed By: jim, rjung, covener



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