Add python build setup.

Author: grafikrobot

example/Jamfile.v2

@@ -5,7 +5,9 @@
 #          http://www.boost.org/LICENSE_1_0.txt)
 
 
-project : requirements <library>/boost/graph_parallel//boost_graph_parallel 
+using python ;
+
+project : requirements <library>/boost/graph_parallel//boost_graph_parallel
     <library>/boost/system//boost_system
     <library>/boost/mpi//boost_mpi
     <library>/python//python

test/Jamfile.v2

@@ -2,11 +2,12 @@
 # (C) Copyright 2005, 2006 Trustees of Indiana University
 # (C) Copyright 2005 Douglas Gregor
 #
-# Distributed under the Boost Software License, Version 1.0. (See accompanying 
+# Distributed under 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.)
 
+using python ;
 
-project /boost/graph_parallel/test 
+project /boost/graph_parallel/test
     : requirements
         <library>/boost/graph_parallel//boost_graph_parallel
         <library>/boost/system//boost_system