Fixed bug #66471 (Keep backward compatibility)
Merge branch 'PHP-5.6'

* PHP-5.6:
  Fixed bug #66471 (Keep backward compatibility)
Merge branch 'master' of git.php.net:php-src

* 'master' of git.php.net:php-src:
  move common code into a function
Fixed bug #66440 (Optimisation of conditional JMPs based on pre-evaluate constant function calls)
Merge branch 'PHP-5.6'

* PHP-5.6:
  Fixed bug #66440 (Optimisation of conditional JMPs based on pre-evaluate constant function calls)
further porting notes
Merge remote-tracking branch 'origin/master' into str_size_and_int64

Conflicts:
	ext/opcache/Optimizer/pass1_5.c