Description:
------------
Since we can now pass around function much easier, It would be beneficial to be 
able to "chain" together function calls.

Test script:
---------------
<?php

function returnClosure() {
    return function() {
        print "helloworld";
    };
}

returnClosure()();

Expected result:
----------------
helloworld

Actual result:
--------------
Parse error: syntax error, unexpected '(' in test.php on line 9