Enable PHP 5.4 xdebug

Bug 1082482 - https://bugzilla.redhat.com/show_bug.cgi?id=1082482
Fix PHP 5.4 apc.stat logic

Bug 1082554 - https://bugzilla.redhat.com/show_bug.cgi?id=1082554
Merge pull request #5115 from VojtechVitek/fix_php54_xdebug

Merged by openshift-bot
Merge pull request #5116 from VojtechVitek/php54_fix_apc.stat

Merged by openshift-bot