[Samba] Winbind backend : rid is too much underappreciated

[miguelmedalha at sapo.pt]

> Deterministic conversion from SID to UID rocks! Simple and elegant.  
> Everything is working in just a few minutes. Great! More people  
> should know about this.
> Just use the same ranges in all your servers and you will have  
> consistent IDs in all machines.
>
The icing on the cake, as they say, could be a small schema extension  
to the Active Directory. Then, on  domain provision with the  
samba-tool we would input the wanted rid back end range. This would be  
  read by every member server and automatically configured. The  
benefits of centralized management of UID/GID without the pain.