Merge branch 'PHP-5.5' of https://git.php.net/repository/php-src into PHP-5.5

# By Dmitry Stogov
# Via Dmitry Stogov
* 'PHP-5.5' of https://git.php.net/repository/php-src:
  Fixed bug #65845 (Error when Zend Opcache Optimizer is fully enabled).