It was giving up too early because qmlscene_??.qm doesn't exist.
The file qt_??.qm links to all existing Qt-provided translation files,
so it is enough by itself unless there are application-specific
translations besides.

Change-Id: Iebedf54ddb4eef4f4d7da8a7fade1850a366aee8
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>