That one was used to allow specifying in system console a new path for missing libraries, when loading a .blend file. We now have a much more easy and user-friendly way of repairing missing linked datablocks/libraries, so this is not needed anymore.
That one was used to allow specifying in system console a new path for missing libraries, when loading a .blend file. We now have a much more easy and user-friendly way of repairing missing linked datablocks/libraries, so this is not needed anymore.