Revert a parsed uri change which I think was Martin's -- in proxy_fixup

the comparisons are done against the url as stored in r->filename... it's
kind of lame, but this is just how the proxy works.  So for example,
if you're using ProxyPass the url stored in r->filename won't match what
was passed to parse_uri() ... so r->parsed_uri isn't useful.

I reverted to what was before, plus a few performance tweaks I couldn't
resist.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80392 13f79535-47bb-0310-9956-ffa450edef68