[MLton] Emacs mode for editing ML Basis files

[Matthew Fluet]

> Quoting Vesa Karvonen <vesa.karvonen@cs.helsinki.fi>:
> > Quoting Matthew Fluet <fluet@cs.cornell.edu>:
> > > As long as we're organizing things conceptually, how about:
> > > 
> > > doc/emacs  --->  ide/emacs
> > > doc/mlton.spec  --->  packages/rpm/mlton.spec
> > > debian  --->  packages/debian
> > > freebsd  --->  packages/freebsd
> > > doc/cmcat  --->  utils/cmcat
> > > doc/cm2mlb  --->  utils/cm2mlb
> > 
> > Looks good to me.
> 
> Actually, it occured to me that you might want to use either
> singular or plural forms consistently.

That is a good point.  I guess singular, since we've already got "doc", 
"include", "man", and "regression".

So that would make it

doc/emacs  --->  ide/emacs
doc/mlton.spec  --->  package/rpm/mlton.spec
debian  --->  package/debian  
freebsd  --->  package/freebsd
doc/cmcat  --->  util/cmcat   
doc/cm2mlb  --->  util/cm2mlb