[Samba] Using separate packages for a DC

[miguel medalha]

> It certainly would be nice to have distinct 'smb.conf' and 'samba.conf' files.
> Each one would have its own manual page containing only the parameters that apply to each case, AD DC and regular file server.
> The current situation, mixing parameters that apply and don't apply to a DC is somewhat confusing to many users.

A transition period could be implemented, during which the 'samba' daemon would read its configuration from both 'samba.conf' and 'smb.con', in this order of preference, until at a certain point the use of 'smb.conf' by the AD DC would be discontinued.