Usermode request: add patch enabling group membership to control auth user

[Bill Nottingham]

Matthew Miller (mattdm at mattdm.org) said: 
> This all may sound complicated, but it's not. Usermode already implements
> 99% of what was needed -- the core patch is about a dozen lines! (There's
> also is_group_member and is_grouplist_member helper functions, but those are
> very simple too.)
> 
> And, it's a very non-evasive change, because if the config files aren't
> changed, it defaults to acting exactly like it does now.
> 
> See the patch, and the request, at:
> 
> <http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=86188>
> 
> Any comments/suggestions are very welcome.

SELinux roles! :)

Bill