[MLton] MLton on Debian hppa, powerpc, and sparc

[Matthew Fluet]

>> Could we get a memory.hppa-linux.mlb and also mlnlffigen installed into
>> /usr/bin? It'll need a manpage too.
>
> I added the Makefile line to insall mlnlffigen.  Matthew, can you
> handle the memory file and the manpage?

I added memory.hppa-linux.mlb and a (stub) man page for mlnlffigen.
Obviously, the man page could be fleshed out a lot more, but it's there if 
there was something checking for missing man pages.