Fixed #209

Added conditional include stdbool.h based on @equalsraf comment.

Author: redboltz

include/msgpack/sysdep.h

@@ -183,16 +183,20 @@ typedef unsigned int _msgpack_atomic_counter_t;
 
 
 #if !defined(__cplusplus) && defined(_MSC_VER)
-#if !defined(FALSE)
-#define FALSE (0)
-#endif
-#if !defined(TRUE)
-#define TRUE (!FALSE)
-#endif
-#define bool int
-#define true TRUE
-#define false FALSE
-#define inline __inline
+#  if !defined(FALSE)
+#    define FALSE (0)
+#  endif
+#  if !defined(TRUE)
+#    define TRUE (!FALSE)
+#  endif
+#  if _MSC_VER >= 1800
+#    include <stdbool.h>
+#  else
+#    define bool int
+#    define true TRUE
+#    define false FALSE
+#  endif
+#  define inline __inline
 #endif
 
 #endif /* msgpack/sysdep.h */