Added boost header

test/external/boost/graph/distributed/reverse_graph.hpp

@@ -0,0 +1,38 @@
+// Copyright (C) 2005-2006 The Trustees of Indiana University.
+
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  Authors: Nick Edmonds
+//           Andrew Lumsdaine
+#ifndef BOOST_GRAPH_DISTRIBUTED_REVERSE_GRAPH_HPP
+#define BOOST_GRAPH_DISTRIBUTED_REVERSE_GRAPH_HPP
+
+#ifndef BOOST_GRAPH_USE_MPI
+#error "Parallel BGL files should not be included unless <boost/graph/use_mpi.hpp> has been included"
+#endif
+
+#include <boost/graph/reverse_graph.hpp>
+#include <boost/graph/parallel/container_traits.hpp>
+
+namespace boost {
+  namespace graph {
+    namespace parallel {
+      /// Retrieve the process group from a reverse graph
+      template<typename Graph, typename GraphRef>
+      struct process_group_type<reverse_graph<Graph, GraphRef> >
+        : process_group_type<Graph> { };
+    }
+
+  }
+
+  /// Retrieve the process group from a reverse graph
+  template<typename Graph, typename GraphRef>
+  inline typename graph::parallel::process_group_type<Graph>::type
+  process_group(reverse_graph<Graph, GraphRef> const& g) {
+    return process_group(g.m_g);
+  }
+} // namespace boost
+
+#endif