Bug#545403: live-helper: packageslists directory created in config but unused

["Harold" <hb@nordicwind.ca>]

I agree that this behaviour is awkward and I've had a similar problem with
multiple builds.

> ...except one (which sucks somehow as well, though): we could request
> packages lists to be named with a particular extensions, e.g. we would
> only use chroot_local-packageslists/*.list automatically. that would
> allow to have other files in there that are not used, and could teach
> lh_config to 'activate' packageslists by renaming them.
>

.. or maybe an easier solution is to keep different directories with
different packageslists with a common meaningful extension .. and then
activate different packagelists by linking or renaming to the required
directory.
i.e.
chroot_local-packageslists.xfce-openoffice
chroot_local-packageslists.kde
chroot_local-packageslists.kde-openoffice

could be three useful builds ... and you could link one of them to
'chroot_local-packageslists' to activate it.

I think I tried this once and the link did not work and I had to 'copy'
instead which was not the best since you could fall into the trap of
modifying the copy and not the 'source'. I did not want to 'move' since
you could easily forget how to 'unmove' later .. unless it's built into
lh_config somehow.

Harold