Update Flame 3 artistic motif directory structure:
    
        - Move `Flame/3/Distro/5.5/Media' up to `Flame/3/Media' and remove
          `Flame/3/Disto/5.5' directory.
    
        - Installation media images, based on Flame 3 artistic motif, are
          rendered using the `trunk/Identity/Images/Themes/Flame/3/Media'
          directory as source and the `--releasever' and `--basearch'
          options to control the release and architecture the images are
          produced for.