updated boost on windows

winx64/include/boost/metaparse/v1/fwd/string.hpp

@@ -1,38 +1,18 @@
 #ifndef BOOST_METAPARSE_V1_FWD_STRING_HPP
 #define BOOST_METAPARSE_V1_FWD_STRING_HPP
 
-// Copyright Abel Sinkovics (abel@sinkovics.hu)  2013.
+// Copyright Abel Sinkovics (abel@sinkovics.hu)  2017.
 // 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)
 
 #include <boost/metaparse/config.hpp>
-#include <boost/metaparse/limit_string_size.hpp>
-#include <boost/metaparse/v1/impl/no_char.hpp>
-#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
 
-namespace boost
-{
-  namespace metaparse
-  {
-    namespace v1
-    {
-#ifdef BOOST_METAPARSE_VARIADIC_STRING
-      template <char... Cs>
-      struct string;
+#if BOOST_METAPARSE_STD >= 2011
+#  include <boost/metaparse/v1/cpp11/fwd/string.hpp>
 #else
-      template <
-        BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
-          BOOST_METAPARSE_LIMIT_STRING_SIZE,
-          int C,
-          BOOST_NO_CHAR
-        )
-      >
-      struct string;
+#  include <boost/metaparse/v1/cpp98/fwd/string.hpp>
 #endif
-    }
-  }
-}
 
 #endif