This only worked for distributions with a RedHat/Fedora upstream
so far and requires more dynamicity in the TaskWindow as the
TaskHandler dies with the engine, leading to crashs.

Change-Id: I20d0b3c79e4fd0026cd2a0c9ff5b0a4be22c3121
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>