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

[Georg Brandl]

Nick Coghlan wrote:

> P.S. In case it wasn't clear, I'm personally fine with 'nonlocal'. The only 
> objections I've seen to the term are that it's a negative definition (but the 
> concept itself is a negative one) and the word looks ugly to some folks. 
> Neither of those objections bothers me overly much :)

Plus, it's not used in Python code as an identifier (judging from the stdlib and
what's indexed on Google's codesearch).

Georg