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/pyclbr.rst b/Doc/library/pyclbr.rst
index dd6c0ae..2f81451 100644
--- a/Doc/library/pyclbr.rst
+++ b/Doc/library/pyclbr.rst
@@ -1,4 +1,3 @@
-
:mod:`pyclbr` --- Python class browser support
==============================================
@@ -6,6 +5,9 @@
:synopsis: Supports information extraction for a Python class browser.
.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
+**Source code:** :source:`Lib/pyclbr.py`
+
+--------------
The :mod:`pyclbr` module can be used to determine some limited information
about the classes, methods and top-level functions defined in a module. The