records for scalability.

Submitted by: Yingqi Lu <yingqi.lu@intel.com>, Jeff Trawick,
              Jim Jagielski, Yann Ylavic

Reviewed by: ylavic, jim, minfrin


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(r1380525 on trunk)

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 * Do not reset the retry timeout if the worker is in error at this stage even
   if the connection to the backend was successful. It was likely set into
   error by a different thread / process in parallel e.g. for a timeout or
   bad status. We should respect this and should not continue with a connection
   via this worker even if we got one.


* Do a more complete cleanup here. At this point we cannot end up with something useful with the data we created so far.
Submitted by: rpluem
Reviewed/backported by: jim


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Add in finding LUA installed via Macports and others


accept both 5.1 and 5.2, so make messages clear

Reviewed/backported by: jim


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mod_negotiation: simplify type-map body tag lookup, and be safe
should it contain a NUL byte.

Submitted by: ylavic
Reviewed/backported by: jim


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Core filters do not need mod_proxy.h

Small speed optimization when parsing <Limit>, <LimitExcept> and environment variables


Save a few bytes in conf pool

Remove some spaces between some return statements  and ';' + fix a strange formating in a 'for' loop

In order to save a few cycles, delay a hash table lookup which is not necessary needed

Constify + save a few bytes in conf pool
Submitted by: ylavic, jailletc36, jailletc36, jailletc36, jailletc36, jailletc36
Reviewed/backported by: jim


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allow autoindex w/o mod_dir/mod_mime setting the DIR_MAGIC_TYPE.


Submitted by: covener
Reviewed/backported by: jim


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Improve macro definition in order to avoid potential precedence issues.

For example, sparse spotted that the following line was spurious:
        newcond->flags &= ~CONDFLAG_NOCASE;
It this particular case, 2 bits were resetted (instead of only 1). This was harmless because the first bit (i.e. CONDFLAG_NONE) is never tested as-is.
Submitted by: jailletc36
Reviewed/backported by: jim


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