[MLton] Shootout Revived

[Chris Clearwater]

Stephen Weeks <sweeks@sweeks.com> writes:

> The main change was getting one of the OCaml benchmarks working.  The
> completely missing score was the only reason OCaml was as low as it
> was.

Looking at the shootout, I see that MLton is having the same problem
with its Hash Access test. This doesn't have as large of an effect as
it did with OCaml, however, since Hash Acess is by default only
weighted to 1.