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Improve pkg-config usage for mod_ssl/ab:

also use pkg-config for determining the -l flags (and fall back
to a hardcoded default of "-lssl -lcrypto")

add --static to pkg-config invocations, so that libraries for
static linking are also taken into account (PR 54252 - note that
the additional flags will only appear in modules/ssl/modules.mk
and ab_LDFLAGS, so potential side effects are limited)

separate --libs-only-L and --libs-only-other into two invocations
(can't be used concurrently, only the first takes effect)

use --silence-errors where applicable


mod_ssl/ab: only use "--static" for pkg-config when explicity requested
(by adding an "--enable-ssl-staticlib-deps" option to configure)

Submitted by: kbrand
Reviewed/backported by: jim


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Give the opportunity to the compiler to compute at compile time the strlen of the given
string. Most of the calls to ap_fputs are done with constant strings.
Submitted by: jailletc36
Reviewed/backported by: jim


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Add a few AP_DEBUG_ASSERT()s for the benefit of clang


style tweak

No need to clear memory that is fully initialized just the line after.

Avoid unnecessary %s substitution

Avoid processing some files twice if APR_INCLUDEDIR and
APU_INCLUDEDIR containin the same path but differing in
doubled slashes.


Fixed position of the NEED_ENHANCED_ESCAPES define.

This define should be outside of the else case so that it
gets also defined if we cross-compile for Win32 or OS2.

Submitted by: sf, trawick, jailletc36, jailletc36, sf, fuankg
Reviewed/backported by: jim


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add new ap_bin2hex() utility function


remove unnecessary cast

Submitted by: sf
Reviewed/backported by: jim


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Add useful mod_status info... try to determine last time
a specific vhost was accessed/used.
Reviewed/backported by: jim


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rpm: Bump the epoch on mod_proxy_html so that older separately packaged
versions of mod_proxy_html don't take precedence over us.


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for fresh content.

Followup to trunk r1361153+r1373447 resp. 2.4.x
r1373115+r1393191 (PR 53539, wrong Content-Type
for stale content).

Backport of r1439083 from trunk.

No CHANGES needed, because problem was introduced
after 2.4.3.

Submitted by: rjung
Backported by: rjung
Reviewed by: rjung, covener, minfrin


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Clarify more clearly in the examples which configurations are limited
to CacheQuickHandler off and which support both.


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try to emphasize that ErrorDocument nnn /foo doesn't send a HTTP redirect.




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http://httpd.apache.org/docs/2.4/platform/windows.html#comment_760

Get rid of "SystemRoot" used where ServerRoot was meant, by dropping this
whole part of the sentence. 

(use drive letters, unless they're network drives and you're running as 
a service ...)



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