Ref #65, #116 - add exception for php >= 5.4.4-14+deb7u9

Because debian backported patches from 5.4.20 to 5.4.4, which includes the patch for #65, the installer/upgrader can ignore everything higher than php version  5.4.4-14+deb7u9. See also http://metadata.ftp-master.debian.org/changelogs//main/p/php5/php5_5.4.4-14+deb7u11_changelog.