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

# By Stanislav Malyshev (3) and others
# Via Stanislav Malyshev (3) and Nikita Popov (1)
* 'PHP-5.5' of https://git.php.net/repository/php-src:
  Don't try to clean up generator stack on unclean shutdown
  NEWS
  Added PHP_FCGI_BACKLOG, overrides the default listen backlog
  Fixed bug #49175: mod_files.sh does not support hash bits
  add fix for  #60560 into upgrading
  Add a __wakeup() method to SplFixedArray, thereby fixing serialising an
  Update NEWS
  small optimization
  fix bug #61860: use USearch for searches, it does the right thing