refactoring; move chmod command from tar_pipe_in() into save_to() so all chmods are together
refactoring; move chmod command from tar_pipe_in() into save_to() so all chmods are together

cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner,cyber-dojo/runner,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless