bin/175743: [patch] Patches for kgdb(1) - improve test of arguments; update manpage

[emaste at FreeBSD.org]

Synopsis: [patch] Patches for kgdb(1) - improve test of arguments; update manpage

Responsible-Changed-From-To: freebsd-bugs->adrian
Responsible-Changed-By: emaste
Responsible-Changed-When: Fri Feb 15 14:58:57 UTC 2013
Responsible-Changed-Why: 
kgdb's -b is Adrian's addition

http://www.freebsd.org/cgi/query-pr.cgi?pr=175743