* src/boards/menu2.c: (menu_end), (item_event), (set_content),
	(create_info_area), (display_welcome): changed to use the richtext canvas for all the text
	* src/gcompris/gc_core.h: added the function gc_zoom_factor_get()
	* src/gcompris/gc_net.c: (resize_pixbuf_cb), (gc_net_load_pixmap):
	* src/gcompris/gcompris.c: (test_ccc), (gc_zoom_factor_get),
	(_gc_configure_event_callback), (init_background), (setup_window),
	(main): prepared to support loading images at zoom factor.

svn path=/branches/gcomprixo/; revision=2683