Add some useful links to CVS documentation.

htdocs/dev/cvs.html

@@ -68,6 +68,27 @@ are:</p>
        in this module. </dd>
 </dl>
 
+<h3>CVS Documentation</h3>
+
+<p>There is a variety of documentation on CVS available online.  These
+sources are perhaps the most useful:</p>
+
+<ul>
+  <li> <em><a href="http://www.cvshome.org/docs/manual/">Version
+       Management with CVS</a></em>
+       <br />
+       The official manual for CVS, by Per Cederqvist and others.</li>
+
+  <li> <em><a href="http://cvsbook.red-bean.com/">Open Source
+       Development with CVS</a></em>
+       <br />
+       Online version of portions of Karl Fogel's book on using CVS
+       for open source projects.</li>
+
+  <li> <em><a href="http://www.cvshome.org/docs/">CVS Documentation</a></em>
+       <br />
+       A list of available documentation on CVS.</li>
+
         </td>
       </tr>
       <tr>