[Distutils] packaging docs

[Chris McDonough]

What state are the docs for "packaging" in right now?

Of:

http://docs.python.org/dev/packaging/setupcfg.html

and

http://docs.python.org/dev/packaging/introduction.html

... the latter comes directly after the former in navigation order.  The
former describes setup.cfg-driven and presumably pysetup-driven stuff,
but the latter goes on to discuss setup.py syntax and looks like it
might be distutils docs with a bit of search-and-replace done.

- C