Update PHP releases 5.4, 5.5 and 5.6

Changelog:

- 5.4.35: http://php.net/ChangeLog-5.php#5.4.35
- 5.5.20: http://php.net/ChangeLog-5.php#5.5.20
- 5.6.4: http://php.net/ChangeLog-5.php#5.6.4