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/index.rst b/Doc/packaging/index.rst
new file mode 100644
index 0000000..1b597d7
--- /dev/null
+++ b/Doc/packaging/index.rst
@@ -0,0 +1,45 @@
+.. _packaging-index:
+
+##############################
+ Distributing Python Projects
+##############################
+
+:Authors: Greg Ward, Anthony Baxter and Packaging contributors
+:Email: distutils-sig@python.org
+:Release: |version|
+:Date: |today|
+
+This document describes Packaging for Python authors, describing how to use the
+module to make Python applications, packages or modules easily available to a
+wider audience with very little overhead for build/release/install mechanics.
+
+.. toctree::
+   :maxdepth: 2
+   :numbered:
+
+   tutorial
+   setupcfg
+   introduction
+   setupscript
+   configfile
+   sourcedist
+   builtdist
+   packageindex
+   uploading
+   examples
+   extending
+   commandhooks
+   commandref
+
+
+.. seealso::
+
+   :ref:`packaging-install-index`
+      A user-centered manual which includes information on adding projects
+      into an existing Python installation.  You do not need to be a Python
+      programmer to read this manual.
+
+   :mod:`packaging`
+      A library reference for developers of packaging tools wanting to use
+      standalone building blocks like :mod:`~packaging.version` or
+      :mod:`~packaging.metadata`, or extend Packaging itself.