[Distutils] MSVC7 directories

[Mark Hammond]

> > I think there is a simple fix to keep most people happy.
> distutils can just
> > *append* the existing env var value to the new value.  I think it is
> > acceptable to say distutils wont let you set these to
> change the location of
> > standard libraries or headers, but will let you add new ones.
>
> So there's no need to read the entries set in MSVC7 itself (for which
> you have uploaded a patch) ?

:)  Well, that would work I guess.  I see no reason we can't support both
the "GUI config" and "environment config", but if you felt it appropriate to
support only the environment variables, it wouldn't really upset me.

But I point out again that the way things stand at the moment, *neither*
work with MSVC7.1

Mark.