message: Add back scope_name used by a few contracts
diff: @@ -23,6 +23,7 @@ typedef uint64_t account_name;
  typedef uint64_t permission_name;
  typedef uint64_t table_name;
  typedef uint32_t time;
  +typedef uint64_t scope_name;
  typedef uint64_t action_name;
  typedef uint16_t weight_type;
  