fixed screen parameter type in requests
fixed screen parameter type in requests

For the following requests, fixed the paramater type to be CARD32 instead
of SCREEN structure

Requests: - CreateNewContext
          - CreatePbuffer
          - CreateWindow

stapelberg/xcb-proto,OpenInkpot-archive/iplinux-xcb-proto,OpenInkpot-archive/iplinux-xcb-proto,nbaum/xcb-proto,nbaum/xcb-proto,stapelberg/xcb-proto