Branch has "-r" for remote branches and "-a" for local and remote.
It seems logical to mirror that in show-branch. Also removes the
dubiously useful "--tags" option (as part of changing the meaning
for "--all").
Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>