Add support for sending the environment to the backend fastcgi process

to mod_proxy_fcgi.

* modules/proxy/mod_proxy_fcgi.c
  (proxy_fcgi_canon): Remove unused variables, wrap a long line.
  (send_begin_request): Helper function to send the FCGI_BEGIN_REQUEST
   message.
  (send_environment): Helper function to send the environment.
  (fcgi_do_request): Use send_begin_request and send_environment.

Submitted By: Garrett Rooney <rooneg apache.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/fcgi-proxy-dev@359043 13f79535-47bb-0310-9956-ffa450edef68