* src/glade-editor.c: Cleared up property->class references, Added comments,
	  Made spin button adjustments from the class, not from Glade Parameters.

	* src/glade-parameter.[ch]: Removed convenience create_adjustement function,
	  Certain data found in the xml file is parsed directly onto the class data and
	  others are dynamicly added through glade params, for this reason I'm
	  depricating use of glade-parameters in the core code, glade-parameters can
	  be kept around as a usefull configuration mechanism for plugin writers.

	* src/glade-gtk.c:
	    - Added special enum type & pspec for GtkImage
	    - Now GtkImage uses one of three methods to save
	        o Filename
	        o Stock
	        o Icon Theme
	      the appropriate controls are disabled & enabled
	      accordingly and survive a save/load with no custom
	      property help.
	    - Icon Size is disabled if a Pixel Size is specified
	      (as pixel size takes precedence on this object).
	    - Removed pointless unfinished API doc headers, the core
	      (i.e. libgladeui) could well be documented for use by
	      plugin writers and application writers (like anjuta for
	      instance) but in the plugin its pretty pointless.

	* src/glade-property-class.[ch]:
	    - Fiddled with g_critical outputs
	    - Added glade_property_class_make_adjustment
	    - Added LIBGLADEUI_API to func headers.

	* src/glade-property.[ch]: Added glade_property_reset()/glade_property_default()
	* src/glade-widget.[ch]: Added glade_widget_property_reset(),
	  glade_widget_pack_property_reset(), glade_widget_property_default(),
	  glade_widget_pack_property_default().

	* src/glade.h: Added definitions for defaults in editor adjustments.

	* widgets/gtk+.xml: Added information for GtkImage properties.