Touchpad stylus mode

[Bert Freudenberg]

The B2 now can be used as a graphics tablet, hardware-wise at least.  
Great!

Now there needs to be some driver adjustment IMHO. The resistive-mode  
movement is simply mapped to the core pointer right now, moving about  
the upper third of the display, but without generating any down/up  
events. It's pretty much useless for writing or painting.

So, what is the plan here?

Will it be mapped to a secondary xinput device, so activities can  
handle it themselves? Or do all activities need to put a writable  
area on top for the pad to be useful (provided up/down events are  
delivered for the core pointer)?

- Bert -