various rlogind stuff, plus new telnetd stuff (was Re: AIX rlogind)

[mrgreen () mame mu oz au (matthew green)]

it would seem that this rlogind (and the same bug
with telnetd/rlogind using -l -hfoo.bar) depends
on if the getopt(3) routine takes arguments in the
form of "-Xblah" and "-X blah" to mean "-X" with
argument "blah".

a number of "new" systems (*bsd/linux) allow you to
pass a username of "-hblah" thus changing the host
you login from.  as far as i've been able to
determine this only affects utmp/wtmp stuff, but
i could be wrong ;-)