New upstream version 8.1.0

thirdparty/source/boost_1_61_0/boost/ref.hpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * 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_REF_HPP
+#define BOOST_REF_HPP
+
+// The header file at this path is deprecated;
+// use boost/core/ref.hpp instead.
+
+#include <boost/core/ref.hpp>
+
+#endif