add link to the red-dove.com page about the logging package

Doc/lib/liblogging.tex

@@ -239,6 +239,13 @@ behavior.
   \seepep{282}{A Logging System}
          {The proposal which described this feature for inclusion in
           the Python standard library.}
+  \seelink{http://www.red-dove.com/python_logging.html}
+          {Original Python \module{logging} package}
+          {This is the original source for the \module{logging}
+           package.  The version of the package available from this
+           site is suitable for use with Python 2.1.x and 2.2.x, which
+           do not include the \module{logging} package in the standard
+           library.}
 \end{seealso}