[Samba] Use windows to set file permissions.

[Miguel Medalha]

> And you need winbind to fetch the fetch out of the domain, otherwise 
> windows could not known the samba-users.
>
You only need winbind if your server is a member server of a Windows 
Active Directory.

I am setting file permissions from Windows on a Linux Samba PDC and I 
don't use winbind.

You need a filesystem with ACL support (not only EXT3) or another method 
to store ACLs such as Extended Attributes or a TDB database using one of 
the VFS modules provided with Samba.