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	(x_wm_set_window_state, x_wm_set_icon_pixmap,
	x_wm_set_icon_position): Use x_wm_hints.
	(x_term_init): Set the `input' field of x_wm_hints, and its flag.

	* xterm.c (x_text_icon): Call x_wm_set_icon_pixmap with a pixmap
	of zero, to clear the pixmap.
	(x_wm_set_icon_pixmap): Accept this protocol; if pixmap is zero,
	specify no pixmap for the icon.

	* xterm.c (x_set_window_size): Call check_frame_size to make sure
	that the requested dimensions are within acceptable limits.
	Store the new size information in the frame structure.

	* xterm.c (x_wm_set_size_hint): Don't try to set the base_height
	and base_width elements of size_hints if PBaseSize is not
	#defined.  Set the minimum frame size according to the information
	returned by check_frame_size.

	* xterm.c (XTread_socket, x_do_pending_expose): Call
	change_frame_size with a DELAY of 1.

	* xterm.c (in_display): Deleted this; it's never used in xterm.c,
	and there is another variable by the same name in dispnew.c.

	* xterm.c (FRAME_IS_TERMCAP, FRAME_IS_X, FRAME_HAS_MINIBUF):
	Renamed these to FRAME_TERMCAP_P, FRAME_X_P, and
	FRAME_HAS_MINIBUF_P, for consistency with the rest of the
	frame macros.