get rid of object_signal:: GtkObject argument uses, use GObject

get rid of object_signal:: GtkObject argument uses, use GObject

Tue Dec 12 08:24:42 2000  Tim Janik  <timj@gtk.org>

        * gtk/testgtk.c:
        (create_tooltips):
        (create_statusbar): get rid of object_signal:: GtkObject argument uses,
        use GObject swapped_signal:: properties instead.

        * gtk/gtkcellrenderertoggle.c:
        * gtk/gtkcellrenderertextpixbuf.c:
        * gtk/gtkcellrenderertext.c:
        * gtk/gtkcellrendererpixbuf.c:
        * gtk/gtkcellrenderer.c:
        * gtk/gtktreeviewcolumn.c: s/[sg]et_param/[sg]et_property/, fixed
        missing warnings for invalid property ids, install properties
        with g_object_class_install_property() now.

        * gtk/gtksignal.c:
        (gtk_signal_emit): let g_signal_emit_valist() collect the values for us.