ports/179773: [patch] net-mgmt/sing: add license

[culot at FreeBSD.org]

Synopsis: [patch] net-mgmt/sing: add license

Responsible-Changed-From-To: freebsd-ports-bugs->culot
Responsible-Changed-By: culot
Responsible-Changed-When: Thu Jun 20 16:20:52 UTC 2013
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=179773