Log Message:
Updated package to latest version, 0.8. Changes include:

        * Cudf: performance improvement by allocating larger hashtbl
        * Cudf: expose empty_universe
          (Thanks to Pietro Abate for the above 2 patches)
        * Makefile: inhibit parallel build (thanks to Roberto Di Cosmo)
        * Cudf_parser: prevent in_channel leaks when using from_file