Security Update to 4.6.5

This update includes fixes for 14 security issues, as well as ordinary
bug fixes and improvements.

ChangeLog: https://github.com/phpmyadmin/phpmyadmin/blob/master/ChangeLog

MFH: 2016Q4
Security: 6fe72178-b2e3-11e6-8b2a-6805ca0b3d42