Some XI2 requests change in size over different versions and libXi would
need to hack around GetReq and GetReqExtra. Add a new GetReqSized so the
library can explicitly specify the size of the request in 4-byte units.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>