Update target to use RAP 2.2R
Version bump to 1.2.1
Fixes #255: Swipe is never disposed

Change-Id: Ic3d211ad290394fbf3a39a8e951a11dccb23b6b5
Fixes #262: ScrollingComposite: getLayoutData() should return the value
of setLayoutData()

Change-Id: Iffbcd2010a85a8e29baf8f6a2b6fe9c5f883624b