Move headers to core; add quickbook documentation

include/boost/swap.hpp

@@ -1,12 +1,9 @@
-// Copyright (C) 2007 Joseph Gauterin
-//
-// 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)
-
 #ifndef BOOST_SWAP_HPP
 #define BOOST_SWAP_HPP
 
-#include "boost/utility/swap.hpp"
+// The header file at this path is deprecated;
+// use boost/core/swap.hpp instead.
+
+#include <boost/core/swap.hpp>
 
 #endif