handle file:// includes

Now that we can include urls, we shoudl handle `file://`.

hphp/runtime/base/file_repository.cpp

@@ -492,6 +492,11 @@ static bool findFileWrapper(CStrRef file, void* ctx) {
     }
   }
 
+  // handle file://
+  if (file.substr(0, 7) == "file://") {
+    return findFileWrapper(file.substr(7), ctx);
+  }
+
   // TranslatePath() will canonicalize the path and also check
   // whether the file is in an allowed directory.
   String translatedPath = File::TranslatePathKeepRelative(file);

hphp/test/slow/include/file_include.php

@@ -0,0 +1,3 @@
+<?php
+
+include 'file://'.__DIR__.'/hello.inc';

hphp/test/slow/include/file_include.php.expectf

@@ -0,0 +1 @@
+Hello World

hphp/test/slow/include/hello.inc

@@ -0,0 +1,3 @@
+<?php
+
+print "Hello World";