ports/149137: sysutils/nitrogen update to 1.5.1

[makc at FreeBSD.org]

Synopsis: sysutils/nitrogen update to 1.5.1

Responsible-Changed-From-To: freebsd-ports-bugs->makc
Responsible-Changed-By: makc
Responsible-Changed-When: Sat Jul 31 18:29:40 UTC 2010
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=149137