Fixed traceback issue, improved animqueue primitives

luprex/core/cpp/traceback.hpp

@@ -22,8 +22,8 @@ int traceback_coroutine(lua_State *L);
 
 // traceback_pcall
 //
-// same as lua_pcall, except that it automatically supplies traceback_handler as
-// a message handler.
+// same as lua_pcall, except that it automatically supplies 
+// traceback_coroutine as a message handler.
 //
 int traceback_pcall(lua_State *L, int narg, int nret);