message: log data_dir in controller
diff: @@ -1405,6 +1405,7 @@ authorization_manager& controller::get_mutable_authorization_manager()
  controller::controller( const controller::config& cfg )
  :my( new controller_impl( cfg, *this ) )
  {
  + dlog("++++cfg.state_dir ${n}", ("n", cfg.state_dir));
  chain_api_init(this, &my->conf);
  }
  