2005-12-29  Vincent Untz  <vuntz@gnome.org>

	Make applet handles handle transparency. Fix bug #306441.
	Based on patch by Ryan Lortie <desrt@desrt.ca>

	* panel-applet-frame.c: (panel_applet_frame_change_background): change
	the background of the frame if it has handles
	* panel-background.[ch]:
	(panel_background_set_no_background_on_widget): new, moved from
	panel-menu-bar.c
	(panel_background_set_image_background_on_widget): ditto
	(panel_background_set_color_background_on_widget): ditto
	(panel_background_change_background_on_widget): ditto
	* panel-menu-bar.c: (panel_menu_bar_size_allocate): only update the
	background on size changes if it's a pixmap background
	(panel_menu_bar_set_no_background): kill
	(panel_menu_bar_set_image_background): ditto
	(panel_menu_bar_set_color_background): ditto
	(panel_menu_bar_change_background): make it a wrapper for
	panel_background_change_background_on_widget()