This is basically ready to go.  We need to do an experiment where we make a fat
tar file and see how it goes, from scratch.

> For sage and other builders of Macaulay2, it would be very nice if
> ./BUILD/share were to contain all the precomputed architecture independent
> files normally built, so that we could include those files in a (bulky) source
> distribution.  That would make the documentation for StatePolytope and
> FourTiTwo uniform, i.e., the example output would be there, as run on some
> other machine.
