Add visitor and named parameter support to biconnected_componnets, from Janusz Piwowarski

[SVN r30919]

index.htm

@@ -142,6 +142,7 @@
                            Library</a>:</span>
                            <ul>
                              <li><a href="libs/graph/doc/maximum_matching.html"><tt>edmonds_maximum_cardinality_matching</tt></a>, from Aaron Windsor.</li>
+                             <li><a href="libs/graph/doc/biconnected_components.html"><tt>biconnected_components</tt></a> now supports a visitor and named parameters, from Janusz Piwowarski.</li>
                            </ul></li>
                          </ul>
                          

libs/graph

@@ -1 +1 @@
-Subproject commit 49ca29e905cd84ff5e5d96be01f4f1c7518bb855
+Subproject commit b48254406d3810a78173bfb8e379f2328a043245