Gesture event cannot be used to re-enter event loop (at least in graphics scene)

If a graphics widget creates a new event loop and execs it when it receives a QGestureEvent containing a QGesture in Qt::GestureFinished state, QGraphicsScenePrivate::gestureTargets remains in inconsistent state. This causes incorrect gesture event target for the next gesture of the same type.

The gesture target is not obtained for the next triggering gesture, but it is directly delivered to the one listed in the gestureTargets array.

Eero: this is a blocker for Symbian 4.