[Python-3000] Sky pie: a "var" keyword

[Mike Krell]

> I'm +1 on `nonlocal` as well, having long been bothered by the absence
> of something like it. Ka-Ping, will you write a PEP? If not, I'll take
> it on.

Since a PEP seems to be on the horizon, I just wanted to give a quick
mention of what eventually became my favorite spelling of this keyword
-- "use".  To me, it's short, not awkward, and reasonably suggestive
of the semantics.

As I mentioned before, I'm +1 regardless of the spelling.

   Mike