Switch to libs/signals/index.html

[SVN r17470]

libs/libraries.htm

@@ -171,7 +171,7 @@ out how to build object libraries, when needed.</p>
 
     <li><a href="regex/index.htm">regex</a> - Regular expression
         library, from John Maddock.</li>
-    <li><a href="signals/doc/index.html">signals</a> - managed signals &amp;
+    <li><a href="signals/index.html">signals</a> - managed signals &amp;
          slots callback implementation, from Doug Gregor.</li>
     <li><a href="smart_ptr/index.htm">smart_ptr</a> - Five smart
         pointer class templates, from Greg Colvin, Beman Dawes,
@@ -288,7 +288,7 @@ out how to build object libraries, when needed.</p>
     passing references to generic functions, from Jaako J&auml;rvi,
     Peter Dimov, Doug Gregor, and Dave Abrahams.</li>
 
-    <li><a href="signals/doc/index.html">signals</a> - managed signals &amp;
+    <li><a href="signals/index.html">signals</a> - managed signals &amp;
          slots callback implementation, from Doug Gregor.</li>
 </ul>