Upgrade php timezonedb to 2013.4

Upgrade php*-timezonedb from 2013.2 to 2013.4
3 separate commits for PHP versions 5.3, 5.4 & 5.5 

Also fix the following brew audit warnings :
* stable version 2013.2 is redundant with version scanned from URL
* redundant :using specification in url or head