Note that the hostname is passed in the Host: header
of the proxied request.


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1560518 13f79535-47bb-0310-9956-ffa450edef68
Adjust url as required, following what we did to r->filename.
Save some cycles when searching...

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1560546 13f79535-47bb-0310-9956-ffa450edef68