-// Permission to use, copy, modify, distribute and sell this software
-// and its documentation for any purpose is hereby granted without fee,
-// provided that the above copyright notice appears in all copies and
-// that both the copyright notice and this permission notice appear in
-// supporting documentation. No representations are made about the
-// suitability of this software for any purpose. It is provided "as is"
-// without express or implied warranty.
+// 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)