Add a cross-platform "tray icon" API, by porting EggStatusIcon/EggTrayIcon

Add a cross-platform "tray icon" API, by porting EggStatusIcon/EggTrayIcon

2005-08-29  Matthias Clasen  <mclasen@redhat.com>

	Add a cross-platform "tray icon" API, by
	porting EggStatusIcon/EggTrayIcon (#105101)

	* gtk/gtkstatusicon.h: A GtkStatusIcon is an object which
	displays an icon in a notification area.

	* gtk/gtkstatusicon-x11.c: GtkStatusIcon implementation for
	X11, using GtkTrayIcon.

	* gtk/gtktrayicon.h:
	* gtk/gtktrayicon.c: An implementation of the freedesktop.org
	system tray specification, not public API.

	* gtk/gtk.symbols: Add new exported functions.

	* gtk/gtk.h: Include gtkstatusicon.h.

	* gtk/Makefile.am: Add new files.

	* tests/Makefile.am:
	* tests/teststatusicon.c: Test for GtkStatusIcon.