Working up to a 0.1 release.

TODO:
  * Fix word/delim/substitute
  * Implement export
  * Pass all tests
  * Add missing tests, repeat :-)

Try

    make check-bash
    make check-gash

or

    bash -e test/42-sh-export.sh
    ./pre-inst-env gash -e test/42-sh-export.sh

To use Geesh, assuming you have built it in ../geesh, do something like

    GUILE_LOAD_PATH=../geesh:$GUILE_LOAD_PATH
    GUILE_LOAD_COMPILED_PATH=../geesh:$GUILE_LOAD_COMPILED_PATH
    ./pre-inst-env gash --geesh -dd -p -c 'cat < README > bla'