[packaging] Make sure the %preun and %post scripts do not fail.

Signed-off-by: Marko Saukko <marko.saukko@jollamobile.com>
[usb-moded] Detect roaming state from ofono

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Merge branch 'master' of github.com:nemomobile/usb-moded