Add documentation for the packaging module.
This updates the user guide to refer to Packaging instead of Distutils.
Some files still require an update.
diff --git a/Doc/packaging/packageindex.rst b/Doc/packaging/packageindex.rst
new file mode 100644
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+++ b/Doc/packaging/packageindex.rst
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+.. _packaging-package-index:
+
+**********************************
+Registering with the Package Index
+**********************************
+
+The Python Package Index (PyPI) holds metadata describing distributions
+packaged with packaging. The packaging command :command:`register` is used to
+submit your distribution's metadata to the index. It is invoked as follows::
+
+ python setup.py register
+
+Distutils will respond with the following prompt::
+
+ running register
+ We need to know who you are, so please choose either:
+ 1. use your existing login,
+ 2. register as a new user,
+ 3. have the server generate a new password for you (and email it to you), or
+ 4. quit
+ Your selection [default 1]:
+
+Note: if your username and password are saved locally, you will not see this
+menu.
+
+If you have not registered with PyPI, then you will need to do so now. You
+should choose option 2, and enter your details as required. Soon after
+submitting your details, you will receive an email which will be used to confirm
+your registration.
+
+Once you are registered, you may choose option 1 from the menu. You will be
+prompted for your PyPI username and password, and :command:`register` will then
+submit your metadata to the index.
+
+You may submit any number of versions of your distribution to the index. If you
+alter the metadata for a particular version, you may submit it again and the
+index will be updated.
+
+PyPI holds a record for each (name, version) combination submitted. The first
+user to submit information for a given name is designated the Owner of that
+name. They may submit changes through the :command:`register` command or through
+the web interface. They may also designate other users as Owners or Maintainers.
+Maintainers may edit the package information, but not designate other Owners or
+Maintainers.
+
+By default PyPI will list all versions of a given package. To hide certain
+versions, the Hidden property should be set to yes. This must be edited through
+the web interface.
+
+
+.. _packaging-pypirc:
+
+The .pypirc file
+================
+
+The format of the :file:`.pypirc` file is as follows::
+
+ [packaging]
+ index-servers =
+ pypi
+
+ [pypi]
+ repository: <repository-url>
+ username: <username>
+ password: <password>
+
+The *packaging* section defines a *index-servers* variable that lists the
+name of all sections describing a repository.
+
+Each section describing a repository defines three variables:
+
+- *repository*, that defines the url of the PyPI server. Defaults to
+ ``http://www.python.org/pypi``.
+- *username*, which is the registered username on the PyPI server.
+- *password*, that will be used to authenticate. If omitted the user
+ will be prompt to type it when needed.
+
+If you want to define another server a new section can be created and
+listed in the *index-servers* variable::
+
+ [packaging]
+ index-servers =
+ pypi
+ other
+
+ [pypi]
+ repository: <repository-url>
+ username: <username>
+ password: <password>
+
+ [other]
+ repository: http://example.com/pypi
+ username: <username>
+ password: <password>
+
+:command:`register` can then be called with the -r option to point the
+repository to work with::
+
+ python setup.py register -r http://example.com/pypi
+
+For convenience, the name of the section that describes the repository
+may also be used::
+
+ python setup.py register -r other