[Python-3000] Ambiguity in PEP 3115 and the args to __prepare__

[Brett Cannon]

PEP 3115 says a metaclass' __prepare__ takes two positional arguments,
name and bases.  But the example has it actually accept an arbitrary
number of arguments: name and then everything else is bound to bases.

Which happens to be true?  I'm too tired to even fully trust that I am
reading the PEP correctly, so I am not about to try to write an
example to see which is correct and come up with a coherent rewording
if I am right about what is wrong.  =)

-Brett