Bring the debugging output up to date with the kind of things that are

actually being debugged at the moment.  Also note a problem with the way
we handle the path info setup.

* modules/proxy/mod_proxy_fcgi.c
  (proxy_fcgi_canon): Log the filename and path info when we set them,
   add a note that the path info stuff isn't being set if we're run in
   a balancer setup, which needs to be fixed somehow.
  (send_environment): Add an (ifdefed) call to log the environment vars
   we send to the backend server.
  (dump_header_to_log): Default to ifdefing this out, we're a bit beyond
   bugs in the raw FCGI protocol at this point and it fills up the logs.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/fcgi-proxy-dev@383239 13f79535-47bb-0310-9956-ffa450edef68