Add RFC 6598 IPs to reserved addresses

(cherry picked from commit b3f5b822e9f83d99d7cb5eed36ba8d307d1408ee)
NEWS for added reserved ip addresses according to RFC 6598
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  NEWS for added reserved ip addresses according to RFC 6598
  Add RFC 6598 IPs to reserved addresses