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/install/pysetup-config.rst b/Doc/install/pysetup-config.rst
new file mode 100644
index 0000000..0ce9022
--- /dev/null
+++ b/Doc/install/pysetup-config.rst
@@ -0,0 +1,44 @@
+.. _packaging-pysetup-config:
+
+=====================
+Pysetup Configuration
+=====================
+
+Pysetup supports two configuration files: :file:`.pypirc` and :file:`packaging.cfg`.
+
+.. FIXME integrate with configfile instead of duplicating
+
+Configuring indexes
+-------------------
+
+You can configure additional indexes in :file:`.pypirc` to be used for index-related
+operations. By default, all configured index-servers and package-servers will be used
+in an additive fashion. To limit operations to specific indexes, use the :option:`--index`
+and :option:`--package-server options`::
+
+ $ pysetup install --index pypi --package-server django some.project
+
+Adding indexes to :file:`.pypirc`::
+
+ [packaging]
+ index-servers =
+ pypi
+ other
+
+ package-servers =
+ django
+
+ [pypi]
+ repository: <repository-url>
+ username: <username>
+ password: <password>
+
+ [other]
+ repository: <repository-url>
+ username: <username>
+ password: <password>
+
+ [django]
+ repository: <repository-url>
+ username: <username>
+ password: <password>