[MLton] Emacs mode for editing ML Basis files

[Matthew Fluet]

> > 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
> 
> Looks good.  It may cause a little problem with packaging stuff,
> since, e.g., the debian directory expects to be at the top level.  But
> I think things like that are better fixed by Makefile targets than by
> constraing ourselves by others' layouts.

O.k.  Then I'll take care of the new ide and util directories, but I'll 
leave the package directory to you when you have the time and interest to 
fix up the packaging targets.