[Grace-core] Visibility of variables and constants in Objects

[James Noble]

> Why do you think that you should be able to change the program without changing it's meaning?

I don't, in general.  I do, in these specific cases.

> I was under the impression that Michael convinced us that the no shadowing rule was impractical and that we threw it out.  Maybe my memory is faulty?

argh. perhaps we did. it's still in the spec, not that that means much

J