Fixed XInput 2.1 multitouch.
Fixed XInput 2.1 multitouch.

svn path=/trunk/libavg/; revision=6999

libavg/libavg,yyd01245/libavg,scotty007/libavg,th3infinity/libavg,th3infinity/libavg,libavg/libavg,hoodie/libavg,libavg/libavg,th3infinity/libavg,hoodie/libavg,hoodie/libavg,libavg/libavg,scotty007/libavg,th3infinity/libavg,yyd01245/libavg,hoodie/libavg,scotty007/libavg,scotty007/libavg,yyd01245/libavg,yyd01245/libavg