[MLton] (no) Standard library bug

[Matthew Fluet]

> As a quick hack, you can include the standard library in your MLB just
> for effect using
>
>  local $(SML_LIB)/basis/basis.mlb in end
>
> This will install the toplevel suffix and everything else needed to
> get a working program, while the local will prevent any declarations
> from being visible.  Of course, the declaration has the annoying side
> effect of greatly increasing compile time and code size.

Similarly, if one wanted to have an alternative basis, then it 
may be inapproriate to include the "Standard Basis".  For example, with 
Concurrent ML, one might want a thread safe basis with proper I/O 
scheduling; installing the top-level handler and suffix using the 
"Standard Basis" might lead to I/O races.