Missing feature of the new panel

[Jasper Huijsmans]

Nicolas Masse schreef:
> Hi,
> 
> I've begin to look to port my plugin to the new panel, and it seems to me that the new one doesn't give any signal when the current theme is changed. The old one was able to do that, so I think it would be nice to add a signal for such a thing. Something like:
> 
> "theme-changed"
>        void        user_function      (XfcePanelPlugin *plugin,
>                                                     const gchar *new_theme,
>                                                     gpointer user_data);
> 

The panel doesn't have themes...

For both gtk theme and icon theme we should use Gtk facilities (perhaps 
GtkSettings). We still need to look at icon theme handling anyway.

	Jasper