Use the currect coords to test for pointerWasMoved
Bubble tap events
Use pointerIsDown and prepared more appropriately
Improve event handling procedures

Moved some downevent registering code from pointerDown to selectorDown.
Fixed setting of pointerWasMoved in pointerMove
Fix bugs in tap and doubletap
Set downEvent etc. in a more test-friendly way
Fix problems of wrong targets in IE