subrequest, preserve any filters in the output filter chain which
  were not specific to the subrequest across the redirect (where
  f->r does not point to the subreq's request_rec).

PR: 17629




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Response if they so choose to do so. Previously an attempt to cache a 206
was arbitrarily allowed if the response contained an Expires or
Cache-Control header, and arbitrarily denied if both headers were missing.


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Both AP_MPMQ_STATIC and AP_MPMQ_DYNAMIC mean threaded.


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It causes build problems on Windows and the ap_log* calls in main.c
don't profit from it anyway, because there is no server_rec yet where
they could look up core_module's loglevel.


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Only log the tid, if the MPM is threaded.

Suggested by jorton.

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Without this patch apxs doesn't recognize we have DSO support.

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additions and ap_recent_ctime_ex().

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The new function ap_recent_ctime_ex allows for
optional formatting hints. It checks the provided buffer
length and returns the number of consumed bytes. This is necessary,
because when using options, the length of the formatted time string
is no longer constant.

The only option implemented currently is the addition of microsecond
fractions to the timestamp.

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to the error log.

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- Building modules as DSOs and the "most" module set by default.
  r952007, r952008, r952009
- Fixing VPATH build when using included APR.
  r951769, r951769
- Fixing mod_session_crypto build for APR 2 and VPATH
  r951766
- Fixing mod_session_crypto API incompatibility with APR 2
  r951870

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Static building can be achieved with --enable-mods-static
or as previously using --enable-MODULE=static.
The existing --enable-mods-shared still works for
compatibility with existing build scripts.

Modules build with --with-module=... will still be build static.
For dynamic builds of external modules there is apxs.

The default set of modules os now "most". To build a small
set of modules use the new "few".

If APR doesn't support DSOs we fall back to static binding.

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Submitted by: Matt Selsky <selsky columbia edu>


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PR: 49383
Submitted by: Pavel Kankovsky <peak argo troja mff cuni cz>


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- Add some trace logging to core and http


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- Introduce per-directory loglevel configuration


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advantage of per-module loglevels


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- Add macro wrappers for ap_log_*error. On C99, this will save argument
  preparation and function call overhead when a message is not logged
  because of the configured loglevel.
- Introduce per-module loglevel configuration.


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The API in APR 2 is different from the API in APU 1.4/1.5.

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For included APU, apu-config is not in the srcdir but instead
in the builddir. That only matters for VPATH builds, ie. when
you build outside of the source tree.

Similar to r951769 (apr-config).

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in the builddir. That only matters for VPATH builds, ie. when
you build outside of the source tree.

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Using -I$APR_INCLUDEDIR and -I$APU_INCLUDEDIR breaks
for APR 2, because $APU_INCLUDEDIR is empty and a
lonely "-I" doesn't do good for the compiler.

It also breaks for VPATH builds, because then
$APR_INCLUDEDIR contains two paths.

Using $APR_INCLUDES $APU_INCLUDES fixes both problems
and seems to be the way it is done for other modules.

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