Clean up the end-of-headers detection code a bit. I'm still getting some

strange problems with really large numbers of headers, but I'm starting to
suspect that it's a problem with my FastCGI lib, not this module, and this
at least makes things shorter and a bit easier to read, along with fixing
one bug.

* modules/proxy/mod_proxy_fcgi.c
  (handle_headers): Get rid of some cases that were not strictly needed.
   Insert a case that was missed that screwed things up when there were
   more than one header.
  (dispatch): Move the 'done with headers' code into the preceding block,
   add a note about a case that needs to be investigated.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/fcgi-proxy-dev@371840 13f79535-47bb-0310-9956-ffa450edef68