Backport source links from 3.x.
Existing links have been updated to use the new reST role. In some
files, I have also made cosmetic changes to the header.
diff --git a/Doc/library/asynchat.rst b/Doc/library/asynchat.rst
index 5096e4c..6f4af41 100644
--- a/Doc/library/asynchat.rst
+++ b/Doc/library/asynchat.rst
@@ -1,4 +1,3 @@
-
:mod:`asynchat` --- Asynchronous socket command/response handler
================================================================
@@ -7,6 +6,9 @@
.. moduleauthor:: Sam Rushing <rushing@nightmare.com>
.. sectionauthor:: Steve Holden <sholden@holdenweb.com>
+**Source code:** :source:`Lib/asynchat.py`
+
+--------------
This module builds on the :mod:`asyncore` infrastructure, simplifying
asynchronous clients and servers and making it easier to handle protocols