MFH: r418829

- update libgd to 2.2.2
- new MASTER_SITES
- add security patch
PR:		210913
Submitted by:	Piotr Kubaj
Security: CVE-2015-8874
Security: CVE-2016-3074
Security: http://www.openwall.com/lists/oss-security/2016/07/12/4

Approved by:	portmgr (feld)