[Python-3000] Signature PEP

[Sanghyeon Seo]

Hi, PyPy people,

What do you think about this Signature PEP?
http://mail.python.org/pipermail/python-3000/2006-April/001249.html

PyPy has something similar as
pypy.interpreter.pycode.cpython_code_signature, and I think it's
definitely a good idea to have some better interface than code.co_*
and CO_FLAGS.
http://codespeak.net/svn/pypy/dist/pypy/interpreter/pycode.py

We also have more extensive interface in pypy.annotation.description:
http://codespeak.net/svn/pypy/dist/pypy/annotation/description.py

There's FunctionDesc, ClassDesc, and MethodDesc there. Though they are
quite PyPy-specific.

Seo Sanghyeon