facebook/hhvm — pull request #2907 by apuckey (2014-06-11 07:44:17+00:00)
Title: FastCGI: Added support for different proxy types in the script_filename string.

ie: proxy:balancer://host:port/file/name.php and proxy:fcgi://host:port/file/name.php
also converted the 4 comparison strings into statics