turns out that some modules need a lot of work, so make it opt-in for
the time being.

Change-Id: I16365e3d96adab98a1bc748907dbd67488dfad5f
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>