Add properties, based on patch by Lee Mallabone.

Add properties, based on patch by Lee Mallabone.

2001-05-17  Alexander Larsson  <alla@lysator.liu.se>

	* gtk/gtkbbox.c:
	Add properties, based on patch by Lee Mallabone.

	* gtk/gtknotebook.c:
	* gtk/gtktoolbar.c:
	Convert from GtkArg to GParam, based on patch by John Margaglione.

	* gtk/gtkhscale.c:
	* gtk/gtkvscale.c:
	* gtk/gtkhscrollbar.c:
	* gtk/gtkvscrollbar.c:
	* gtk/gtkrange.c:
	Move adjustment property to GtkRange.

	* gtk/gtklabel.c:
	Setup mnemonics on property changes

	* gtk/gtkwidget.c (gtk_widget_get_property):
	GdkExtensionMode is an enum, not a flag. Set it with
	g_value_set_enum ().

	* tests/prop-editor.c:
	Better propery editor.

	* tests/testgtk.c:
	Add new property test. Pass zero to the property editor to
	get properties from all derived types.