[m-rev.] for review: compute imp imported modules in .int files more directly

[Zoltan Somogyi]

On Fri, 2 Aug 2019 12:25:26 +1000 (AEST), Julien Fischer <jfischer at opturion.com> wro
> > +            % Leave dummy types alone.
> > +            % ZZZ Do NOT set !:ImpNeedImports.
> 
> Is that something you intended to address in this change, or a note
> for later?

No, just a reminder for myself during the change. I thought I deleted it
*before* making the diff I attached.

> The change itself looks fine.

Thank you.

Zoltan.