Comment 33 for bug 869652

For multiple cursor support we need to:

1) Use XIQueryDevice(XIAllMasterDevices) and find all the devices that are XIMasterPointer
2) Remember the current XGetClientPointer(dpy)
2) For each one found, do XSetClientPointer(dpy, pointer, None)
3) Now when we do XFixesGetCursorImage(dpy) we will get the image of the current cursor
4) XSetClientPointer the cursor back to the original one