implement support for IBM/Lenovo TrackPoint scroll button
|Reported by:||luroh||Owned by:||nobody|
On all Thinkpads known to mankind, there is a scroll button situated between the right and left mouse buttons. When pressed, the scroll button typically lets the user scroll vertically and/or horizontally by pushing the TrackPoint up/down or left/right.
Attaching a picture of a Thinkpad keyboard with the scroll button and TrackPoint highlighted. Also attaching a picture of what the configuration interface for the TrackPoint device looks like in Gnome.