improve several corner cases related with argument names in parenthesis
- Fix #7362: give a good error message for parenthesized arguments with
defaults.
- Add a py3k warning for any parenthesized arguments since those are not allowed
in Py3. This warning is not given in tuple unpacking, since that incurs the
tuple unpacking warning.
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r76417 | benjamin.peterson | 2009-11-19 16:58:01 -0600 (Thu, 19 Nov 2009) | 1 line