QtIFW

Wait longer for commands to return, but don't try excessively

So far we forcefully killed the executable if it wasn't done after
3 seconds, but re-tried 60 times. It's saner to let the app run
for 10 seconds maximum, and only re-try 3 times.

Change-Id: I41ccf2fdb464f58834c333ab69c4f2738e8365fc
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>