Removed ZEND_ACC_FINAL_CLASS which is unnecessary. This also fixed some currently defined classes as final which were just not being considered as such before.
Merged PR #911.
pcntl_signal_dispatch: Speed up by preventing system calls when unnecessary
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  pcntl_signal_dispatch: Speed up by preventing system calls when unnecessary
Merge branch 'PHP-5.6'

* PHP-5.6:
  pcntl_signal_dispatch: Speed up by preventing system calls when unnecessary