Add gdk_window_iconify.

Add gdk_window_iconify.

Mon Sep 25 15:05:17 2000  Owen Taylor  <otaylor@redhat.com>

	* gdk/gdkwindow.h gdk/x11/gdkwindow-x11.c (gdk_window_iconify):
	Add gdk_window_iconify.

	* gdk/gdkwindow.h gdk/x11/gdkwindow-x11.c
	(gdk_window_set_geometry_hints): Add win_gravity
	to geometry structure.

	* gdk/x11/gdkevents-x11.c (gdk_wm_protocols_filter):
	Implement _NET_WM_PING.

	* gdk/x11/gdkmain-x11.c (_gdk_windowing_init_check):
	Set _NET_WM_PID on the client leader.

	* gdk/x11/gdkwindow-x11.c (gdk_window_set_icon_name):
	Handle UTF-8 better.

	* gdk/x11/gdkwindow-x11.c (gdk_window_set_title): Handle
	UTF-8 better, set _NET_WM_NAME as well. Only set
	icon name if it hasn't previously been explicitely
	set.