who -b option

[Douwe Kiela]

Howdy..
who(1) misses some options that are contained in GNU who and mentioned as
XSI on the SUSv3 specification. Among those is the -b option, which is
supposed to display the date of the last reboot (a reversed uptime, so to
speak). Here you can find a patch to who that adds the option and while here
WARNS-ifies it to 6:

http://leaf.dragonflybsd.org/~virtus/who.patch

Any objections to this?

Greetings,
Douwe Kiela