[MLton] starting builds

[Stephen Weeks]

> The SIGBUS problem on hppa persists.
> Maybe you could take a look at it?
> You should be able to log in to paer.debian.org with your DD account.
> 
> I've cross-compiled it  and built with -g -O0 and nothing improved.
> Hello-world cross-compiled works, but mlton-compile dies immediately.

Before I take a look, perhaps you could try cross compiling all the
regressions.  That will almost certainly turn up something.