[MLton] power pc "port"

[Stephen Weeks]

> I was thinking about putting a script in bin that first tries to find
> gmake, and if it isn't found, it'll call make.

Sounds good.

> What do you mean by putting such a script in bin/mlton?  I thought
> bin/mlton was itself a script?  Or did you just mean bin?

Yes, just bin.

> 1) Why does int.sml's fmt function first ensure that its input is negative
> and then negates the result from rem?  Why not operate on the
> positive absolute value instead?

So that Int.minInt can be handled.