message: exit by default for error() - prevents not specifying second argument
diff: @@ -121,7 +121,7 @@ def print_debug(line, silent, filename):
  # type 1 for error in environment
  # type 2 for warning
  # type 3 for error of compiler or test which isn't the goal of script
  -def error(line, error_type):
  +def error(line, error_type = 1):
  line = line + "\n"
  if error_type == 1:
  sys.stderr.write("Fatal error: " + line)
  