fix integer overflow in {stream,file}_{get,put}_contents()
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  fix integer overflow in {stream,file}_{get,put}_contents()
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  fix integer overflow in {stream,file}_{get,put}_contents()