Amend last change

Amend last change

* lisp/loadup.el: Load touch-screen.el on MS-Windows.

* src/w32fns.c (Emacs_GESTURECONFIG): New structure.
(SetGestureConfig_fn): New variable.
(w32_createwindow): Disable emulated mouse and gesture events
for the frame's window.
(w32_wnd_proc) <WM_LBUTTONDOWN, WM_RBUTTONDOWN, WM_LBUTTONUP>
<WM_RBUTTONUP>: Ignore mouse events which are marked as emulated
pointer events.
(globals_of_w32fns): Load SetGestureConfig from user32.dll.

* src/w32term.c (w32_read_socket): Correct utilization of
GetTouchInputInfo, coordinate spaces, &c.