MLton with your fixes

[Matthew Fluet]

> The failure is because it is only possible to recompile the latest release with
> a new enough version of MLton.  20000906 is too old, although I am a bit
> confused by the error message "invalid file suffix on @MLton" since 2000906 did
> support .cm files -- but it doesn't matter.

But, as of 20000906, you weren't passing @MLton options through the mlton
script to the underlining mlton-compile (or whatever it was called back
then).  So, it's trying to compile the @MLton file.