North Carolina data set V 0.8, May 2008

2013: updated to GRASS GIS 7
      reduced to 
      - vector: "roadsmajor"
      - raster: "elev_lid792_1m", "elev_state_500m", "lsat7_2002_*"
                "lsat5_1987_rgb", "lsat7_2002_rgb"
