[MLton] mlb files

[Matthew Fluet]

> > I was looking through the mlb files that we now use to build the MLton
> > tools and libraries and I have to say that the mlb stuff is looking
> > really good.  Having a real language for describing programming in the
> > very large is a huge win.  And having a real language is also a huge
> > improvement over CM, as our few examples already show.
>
> Yes.  I particularly like mllex and mlyacc, where the "main" program is
> built in the Basis Library environment but the driver is build in the
> MLton Library.

BTW, I've got all the .mlb files for mlton (the compiler itself), but how
to organize a self-compile when the Basis Library and/or structure
MLton may have changed isn't clear.