Custom data field date format showing full date when displayed on Contact Record tab, not M yy as specified.

A custom data field with a date format of 'M yy' is displayed as 'September 1st, 2011' instead of 'Sep 2011' when viewed on someone's contact record. It seems not all the possible formats that can be configured are being included in the supportable formats list.

If I change the following code, it shows up correctly:

CRM/Core/BAO/CustomGroup.php

Around Ln 1627 in the formatCustomValues function:

ORIGINAL CODE
$supportableFormats = array(
'mm/dd' => "%B %E%f $customTimeFormat",
'dd-mm' => "%E%f %B $customTimeFormat",
'yy' => "%Y $customTimeFormat"
);

UPDATED CODE
$supportableFormats = array(
'mm/dd' => "%B %E%f $customTimeFormat",
'dd-mm' => "%E%f %B $customTimeFormat",
'yy' => "%Y $customTimeFormat",
'M yy' => "%b %Y $customTimeFormat",
'yy-mm' => "%Y-%m $customTimeFormat"
);