message: beautify test output file name.
diff: @@ -385,7 +385,7 @@ def make_zip_of_tests(zip_path,
  for parameters in test_parameters:
  keys = parameters.keys()
  for curr in itertools.product(*parameters.values()):
  - label = zip_path.replace(".zip", "") + (",".join(
  + label = zip_path.replace(".zip", "_") + (",".join(
  "%s=%r" % z for z in sorted(zip(keys, curr))).replace(" ", ""))
  if label[0] == "/":
  label = label[1:]
  