bin/165873: tar(1) manpage advertises --uid and --gid which seem to be not implemented

[eadler at FreeBSD.org]

Synopsis: tar(1) manpage advertises --uid and --gid which seem to be not implemented

Responsible-Changed-From-To: freebsd-bugs->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Sun Mar 11 01:27:05 UTC 2012
Responsible-Changed-Why: 
just in case

http://www.freebsd.org/cgi/query-pr.cgi?pr=165873