Fix #60509, pcntl_signal doesn't decrease ref-count of old handler
Updated NEWS
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Updated NEWS
  Fix #60509, pcntl_signal doesn't decrease ref-count of old handler
Updated NEWS
Merge branch 'PHP-5.6'

* PHP-5.6:
  Updated NEWS
  Updated NEWS
  Fix #60509, pcntl_signal doesn't decrease ref-count of old handler
Updated NEWS