[Python-3000] Support for PEP 3131

[Stephen J. Turnbull]

Steve Howell writes:

 > What I was trying to say here is that there might be
 > precedent for non-ascii users already tolerating
 > command line arguments. 

It's an idea, but it turns out not to correspond to reality.  It only
shows there's a precedent for Japanese tolerating command line
arguments.  The Japanese encoding mess is unique, and shameful.