use cleaner way to force build of qm files
use cleaner way to force build of qm files

Change-Id: I6fa77812a19ea0bc453c12a89e627c6165a4902e
Reviewed-by: Joerg Bornemann <47777b9406dbddd02a3fdca8341789a013805a11@digia.com>

qtproject/qttranslations,Distrotech/qttranslations