./modules/gui/gtk/gnome.c, ./modules/gui/familiar/familiar.c: added a
    terminating NULL pointer in the fake argv values we pass to gtk_init().
  * ./modules/misc/qte_main.cpp, ./modules/misc/gtk_main.c: these plugins now
    have the "gui-helper" capability.
  * ./modules/misc/gtk_main.c: paved the way for Gtk2.