Fixed bug #66176 (Invalid constant substitution)
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fixed bug #66176 (Invalid constant substitution)

Conflicts:
	NEWS
Revert NEWS
Merge branch 'PHP-5.6'

* PHP-5.6:
  Revert NEWS
  Fixed bug #66176 (Invalid constant substitution)