MFH: r418828

• Update to 1.7.2
• Bump library version in pkg-plist

Changelog:

https://lists.gnupg.org/pipermail/gnupg-announce/2016q3/000392.html

PR: 211153
Reviewed by: junovitch (mentor)
Approved by: junovitch (mentor)
Exp-run: antoine
Differential Revision: D7221

Approved by: ports-secteam (feld)