change msgpack to 3.1.0 to remove boost dependency

thirdparty/msgpack-c/include/msgpack/preprocessor/facilities/detail/is_empty.hpp

@@ -0,0 +1,55 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Edward Diener 2014.
+#  *     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)
+#  *                                                                          *
+#  ************************************************************************** */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+#ifndef MSGPACK_PREPROCESSOR_DETAIL_IS_EMPTY_HPP
+#define MSGPACK_PREPROCESSOR_DETAIL_IS_EMPTY_HPP
+
+#include <msgpack/preprocessor/punctuation/is_begin_parens.hpp>
+
+#if MSGPACK_PP_VARIADICS_MSVC
+
+# pragma warning(once:4002)
+
+#define MSGPACK_PP_DETAIL_IS_EMPTY_IIF_0(t, b) b
+#define MSGPACK_PP_DETAIL_IS_EMPTY_IIF_1(t, b) t
+
+#else
+
+#define MSGPACK_PP_DETAIL_IS_EMPTY_IIF_0(t, ...) __VA_ARGS__
+#define MSGPACK_PP_DETAIL_IS_EMPTY_IIF_1(t, ...) t
+
+#endif
+
+#if MSGPACK_PP_VARIADICS_MSVC && _MSC_VER <= 1400
+
+#define MSGPACK_PP_DETAIL_IS_EMPTY_PROCESS(param) \
+	MSGPACK_PP_IS_BEGIN_PARENS \
+    	( \
+        MSGPACK_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C param () \
+        ) \
+/**/
+
+#else
+
+#define MSGPACK_PP_DETAIL_IS_EMPTY_PROCESS(...) \
+	MSGPACK_PP_IS_BEGIN_PARENS \
+        ( \
+        MSGPACK_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C __VA_ARGS__ () \
+        ) \
+/**/
+
+#endif
+
+#define MSGPACK_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(a, b) a ## b
+#define MSGPACK_PP_DETAIL_IS_EMPTY_IIF(bit) MSGPACK_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(MSGPACK_PP_DETAIL_IS_EMPTY_IIF_,bit)
+#define MSGPACK_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C(...) ()
+
+#endif /* MSGPACK_PREPROCESSOR_DETAIL_IS_EMPTY_HPP */