MFH: r437214

Security Update to 4.7.0

As well as being the first stable release from the 4.7 branch, this
includes fixes for PMASA-2017-8 where it can be possible to bypass a
configuration restriction forbidding password-less accounts. This
depends on the upstream PHP version -- sites using php-7 are not
vulnerable, sites using php-5.6 are.

ChangeLog: https://www.phpmyadmin.net/files/4.7.0/

Security: 68611303-149e-11e7-b9bb-6805ca0b3d42

Approved by: ports-secteam (junovitch)