[Samba] Winbind backend : rid is too much underappreciated

[Miguel Medalha]

> Just recently a user had problems getting the rid backend to work, so it 
> isn't the magic solution you are suggesting. Once you get your head 
> around the winbind backends, it is easy to set them up. If you did have 
> problems with the 'ad' backend, you had something set incorrectly.

What kind of problems can you have? I did it with these lines:

	idmap config * :backend = tdb
	idmap config * :range = 10000-99999
	idmap config DOMAIN : backend = rid
	idmap config DOMAIN : range = 100000-199999

Everything just works and getent/id show me UIDs/GIDs that imediately tell 
me which SID they correspond to.