[MLton] Operton AMD64

[Ray Racine]

I'm seeing AMD64, Opteron flags in various build files.  Does the 64 bit
build work?  I'm getting errors but I don't believe the port is complete
you guys are just prepping everything for the 64 bit stuff to come.
Correct?

I don't want to start trouble shooting something that isn't expected to
work.

Meanwhile, I was adding flags to get the build files to do a 32 bit
build on a Opteron under FC3-64 (Fedora Core 3, 64 bit).

Is the an already solved issue or still open?

Ray