ports/151314: www/shellinabox: update rc script to allow passing of user/group

[sunpoet at FreeBSD.org]

Synopsis: www/shellinabox: update rc script to allow passing of user/group

Responsible-Changed-From-To: freebsd-ports-bugs->sunpoet
Responsible-Changed-By: sunpoet
Responsible-Changed-When: Sat Oct 9 14:19:21 UTC 2010
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=151314