Fix bug #68421 access.format='%R' doesn't log ipv6 address
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fix bug #68421 access.format='%R' doesn't log ipv6 address
Merge branch 'PHP-5.6'

* PHP-5.6:
  Fix bug #68421 access.format='%R' doesn't log ipv6 address