drop xfce4panel-1.0 lib, bump xfce4panel-2.0 minor for two symbols addition: - xfce_panel_plugin_menu_destroy - xfce_panel_plugin_provider_set_dark_mode fix WANTLIB and drop Gtk+2 dependency.
drop xfce4panel-1.0 lib, bump xfce4panel-2.0 minor for two symbols addition: - xfce_panel_plugin_menu_destroy - xfce_panel_plugin_provider_set_dark_mode fix WANTLIB and drop Gtk+2 dependency.