Fix bug #68594 - Use after free vulnerability in unserialize()
add missing test file
add CVE
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  add CVE
  add missing test file
  Fix bug #68594 - Use after free vulnerability in unserialize()
update news
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  update news
  add CVE
  add missing test file
  Fix bug #68594 - Use after free vulnerability in unserialize()

Conflicts:
	ext/standard/var_unserializer.c