This script makes tablets (absolute pointing device) usable in walk-mode.
Im not totally happy with this because if you don't have your cursor around the center of the view - the operator starts rotating.
However AFAICS the only way to detect tablet events is to check the first mouse-move event. which isn't available when walk mode starts.
So this is a bit of a compromise. its not ideal but it is usable. see: T40621
Probably a better way to resolve this would be to postpone warping the mouse-cursor until the first mousemove event - where we can detect if a tablet is used or not.
But I'd rather not make really big changes to walk mode. just for this case.