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/hashlib.rst b/Doc/library/hashlib.rst
index 51ac93b..063ad59 100644
--- a/Doc/library/hashlib.rst
+++ b/Doc/library/hashlib.rst
@@ -1,4 +1,3 @@
-
:mod:`hashlib` --- Secure hashes and message digests
====================================================
@@ -14,6 +13,10 @@
single: message digest, MD5
single: secure hash algorithm, SHA1, SHA224, SHA256, SHA384, SHA512
+**Source code:** :source:`Lib/hashlib.py`
+
+--------------
+
This module implements a common interface to many different secure hash and
message digest algorithms. Included are the FIPS secure hash algorithms SHA1,
SHA224, SHA256, SHA384, and SHA512 (defined in FIPS 180-2) as well as RSA's MD5