[RFC] last(1) with security.bsd.see_other_uids support

[Wojciech Puchar]

>
> Justifications:
>
> Why the changes? This makes sense for shared hosting environments where
> jails are not practical.

jails are NEVER practical, it is only a necessity! Necessity to be able to 
run stupid software that cannot conform to basic unix standards and 
require to be run as root or from root or once per server.

thank you very much for that patch.