Added boost header

test/external/boost/concept/detail/backward_compatibility.hpp

@@ -0,0 +1,16 @@
+// Copyright David Abrahams 2009. 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_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP
+# define BOOST_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP
+
+namespace boost
+{
+  namespace concepts {}
+
+# if defined(BOOST_HAS_CONCEPTS) && !defined(BOOST_CONCEPT_NO_BACKWARD_KEYWORD)
+  namespace concept = concepts;
+# endif 
+} // namespace boost::concept
+
+#endif // BOOST_CONCEPT_BACKWARD_COMPATIBILITY_DWA200968_HPP