Fix a couple of links from the home page.

[SVN r34963]

index.htm

@@ -247,7 +247,7 @@
                               efficient</a> directory iteration.</li>
 
                               <li>Addition of a <a href=
-                              "libs/filesystem/doc/convenience.htm#basic_recursive_directory_iterator">
+                              "libs/filesystem/doc/tr2_proposal.html#Class-template-basic_recursive_directory_iterator">
                               recursive directory iterator</a>.</li>
                             </ul>
                           </li>
@@ -308,7 +308,7 @@
                               University.</li>
 
                               <li><a href=
-                              "sorted_erdos_renyi_generator.html"><tt>sorted_erdos_renyi_iterator</tt></a>,
+                              "libs/graph/doc/sorted_erdos_renyi_generator.html"><tt>sorted_erdos_renyi_iterator</tt></a>,
                               from Jeremiah Willcock of Indiana
                               University.</li>