ports/185605: [MAINTAINER] Update x11/bgrot to 1.31

[bapt at FreeBSD.org]

Synopsis: [MAINTAINER] Update x11/bgrot to 1.31

State-Changed-From-To: open->closed
State-Changed-By: bapt
State-Changed-When: Thu Jan 9 14:57:00 UTC 2014
State-Changed-Why: 
Concerning @exec/@unexec until we drop support for pkg_install it is
still there, so it is ok like you did. Committed thanks!

http://www.freebsd.org/cgi/query-pr.cgi?pr=185605