message: run_tests.py: prettify max_test_length
diff: @@ -664,9 +664,7 @@ def run_tests(options1, args, print_version):
  # max_test_length is used to issue exact number of whitespace characters when
  # updating status. Otherwise update causes new lines standard 80 char terminal
  # on both Linux and Windows.
  - max_test_length = 0
  - for f in files:
  - max_test_length = max(max_test_length, len(f))
  + max_test_length = max([len(f) for f in files])
  # randomly shuffle the tests if asked to do so
  if (options.random):
  