Description:
------------
In our code we require everyone to put a trailing , in array declarations so that 
blame stays clean. Like when:

$foo = array(
  1,
)

becomes

$foo = array(
  1,
  2,
)

Then only 1 line has changed. But for function calls, when

$foo = foo(
  1
)

becomes

$foo = foo(
  1,
  2
)

now 2 lines blame to you.

Allowing the same syntax for function calls as array creation would be great.

Test script:
---------------
<?php
function id($x) { return $x; }

id(1,);

Expected result:
----------------
It runs.

Actual result:
--------------
Fatal error: syntax error, unexpected ')'