[Samba] Removing Everyone Can Print Permission

[Adam Tauno Williams]

I can navigate to a printer on our print server and right click, go the
securities tab, click "Advanced", select the 'Allow\Everyone\Print' line
and click "Remove".  It goes away, without errors.  If I click apply it
comes right back (grrrrr....).

Can one set ACLs on printer queues (cups backend)?  I'm almost 99%
certain I've done this in the past.

samba-3.0.11rc1 (updated from samba-3.0.10 last night).