MS-Windows followup for change in semantics of XIL and XLI. (Bug#15880)

MS-Windows followup for change in semantics of XIL and XLI.  (Bug#15880)

 src/w32fns.c (Fw32_register_hot_key): Use XINT instead of XLI.
 src/w32notify.c (Fw32notify_add_watch, w32_get_watch_object): Use
 make_pointer_integer instead of XIL.
 (Fw32notify_rm_watch): Use XINTPTR instead of XLI.
 src/w32inevt.c (handle_file_notifications): Use make_pointer_integer
 instead of XIL.  Put a list of the descriptor, action, and file
 name in event->arg, instead of spreading them between event->code
 and event->arg.
 src/w32term.c (queue_notifications): Use make_pointer_integer
 instead of XIL.  Put a list of the descriptor, action, and file
 name in event->arg, instead of spreading them between event->code
 and event->arg.
 src/keyboard.c (kbd_buffer_get_event) [HAVE_W32NOTIFY]: Adjust Lisp
 event creation to changes in w32term.c and w32inevt.c above.