mod_serf is in trunk

[Paul Querna]

I've added mod_serf in r594425:
http://svn.apache.org/viewvc?view=rev&revision=594425

I've grown exceptionally... tired of looking at mod_proxy.  mod_serf is
nice and tight at 440 lines or so.

With just a little more work, I think it could be a production level
reverse proxy.

Oh yeah, and death to ProxyPass, ProxyPassMatch and all similar
directives that should just go inside Location Blocks.  mod_serf will
put everything inside a location block like this:

<Location /foo>
  SerfPass http://www.exmaple.com/
  SerfPreseveHost On
  SerfReversePass off
  SerfTimeout 5
</Location>

So no more semi-global configurations options like mod_proxy has.

Thoughts?

Thanks,

-Paul