Proper multipoint touch support was only introduced in XInput2.1, but Harmattan uses
a tweaked version of XInput2.0 that transfers touch data through mouse events.
This patch applies on the xcb plugin a subset of the changes that were applied on the
Qt 4.7 that was shipped to Harmattan to get similar multipoint touch support.
Change-Id: Ifda7ad40de29d7ded1443d4f78b3ec3807303a9f
Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>
