xfdesktop background reset

[Jasper Huijsmans]

Benedikt Meurer wrote:
> Brian,
> 
> Try switching to a different Gtk+ theme with your latest xfdesktop. :-)
> 
> The background will change to whatever background is set by the 
> GtkStyle. In order to avoid this, you'll need to connect a handler to 
> style_set and call gdk_window_set_back_pixmap() again.
> 

Ok, I added something to CVS. Brian, please check if it's alright.

	Jasper