Restore checks for globals in php testcases

Examples/test-suite/php/overload_rename_runme.php

@@ -5,9 +5,9 @@ require "overload_rename.php";
 
 // No new functions
 check::functions(array());
-// No new classes
+// New classes
 check::classes(array('Foo'));
-// now new vars
+// No new vars
 check::globals(array());
 
 $f = new Foo(1.0);