Qnx: Fix device connection issue

BlackBerry device connections need the Qnx environments
to be set first to find the path to the conenct.jar package.
The device connection at startup needs to wait
for the Qnx setting to be loaded.

Change-Id: I89ad41a65da951f9f9c7a702346f8d4bb428d1cd
Reviewed-by: Tobias Nätterlund <tobias.naetterlund@kdab.com>
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>