* include/winable.h (BlockInput): Add function.

	* include/winable.h (BlockInput): Add function.

	* include/winable.h (WS_ACTIVECAPTION): Add constant.
	For use with WINDOWINFO structure.

	* include/winuser.h [_WIN32_WINNT >= 0x0500] (LockWorkStation):
	Add function.

	* include/winuser.h [_WIN32_WINNT >= 0x0501] (IsWinEventHookInstalled):
	Add function.

	* include/winuser.h [WINVER >= 0x0500] (UnhookWinEvent):
	Add function...

	* include/winable.h [WINVER < 0x0500] (UnhookWinEvent):
	...and duplicate.

	* include/winuser.h [_WIN32_WINNT >= 0x0403] (SendInput):
	Guard function...

	* include/winable.h [_WIN32_WINNT < 0x0403] (SendInput):
	...and duplicate.

	* include/winuser.h [WINVER >= 0x0500] (NotifyWinEvent):
	Guard function...

	* include/winable.h [WINVER < 0x0500] (NotifyWinEvent):
	...and duplicate.

	* include/winuser.h [WINVER >= 0x0500] (MOUSEINPUT, KEYBDINPUT,
	HARDWAREINPUT, INPUT): Guard structures...

	* include/winable.h [WINVER < 0x0500] (MOUSEINPUT, KEYBDINPUT,
	HARDWAREINPUT, INPUT): ...and duplicate.

	* include/winuser.h [_WIN32_WINNT >= 0x0403] (INPUT_MOUSE,
	INPUT_KEYBOARD, INPUT_HARDWARE): Guard constants...

	* include/winable.h [_WIN32_WINNT < 0x0403] (INPUT_MOUSE,
	INPUT_KEYBOARD, INPUT_HARDWARE): ...and duplicate.

	* include/winuser.h: Move around some lines. Reformat according
	to recommended or dominant style. Remove FAR keyword.

	* include/winable.h: Move around some lines.

	* lib/user32.def (BlockInput, IsWinEventHookInstalled,
	LockWorkStation, UnhookWinEvent): Add functions.