Bug#344873: should be a way to get a sudo-only root system

[Christian Perrier <bubulle@debian.org>]

Quoting Joey Hess (joeyh@debian.org):
> Package: user-setup
> Severity: normal
> 
> There should be a way, ideally a debconf question that is preseedable
> and available at low priority, to get a system that has the root account
> locked and has the user account set up to be able to get root with sudo.
> (As seen in Ubuntu.)

I agree. I think this is a very useful feature in Ubuntu.

Instead of a preseedable question, we could setup a sudo account when
the root password is set to NULL.

I suggest we implement as much as possible from Ubuntu patches to
shadow config scripts.....