* configure.in: Switching to GStreamer 0.7.x and using
        gstreamer-interfaces package.
        * src/bacon-video-widget-gst.c: (bacon_video_widget_realized),
        (print_tag), (got_found_tag), (got_video_size),
        (bacon_video_widget_finalize), (bacon_video_widget_open),
        (bacon_video_widget_play), (bacon_video_widget_seek),
        (bacon_video_widget_stop), (bacon_video_widget_close),
        (bacon_video_widget_pause), (bacon_video_widget_can_set_volume),
        (bacon_video_widget_set_volume), (bacon_video_widget_get_volume),
        (bacon_video_widget_set_show_visuals),
        (bacon_video_widget_get_visuals_list),
        (bacon_video_widget_set_visuals), (bacon_video_widget_is_playing),
        (bacon_video_widget_new): Implement the newest libgstplay API.
        * src/gstvideowidget.c: (gst_video_widget_reorder_windows),
        (gst_video_widget_realize), (gst_video_widget_expose),
        (gst_video_widget_allocate), (gst_video_widget_set_property),
        (gst_video_widget_get_property), (gst_video_widget_class_init),
        (gst_video_widget_get_video_window),
        (gst_video_widget_set_logo_focus): Implement a new video widget
        compliant with the XOverlay interface using a model similar to
        xine-lib.
        * src/gstvideowidget.h: