Make help work in stoneridge programs again

Automagically parsing out the log information had screwed up help output
from programs when -h or --help was passed in (but not any other way)
because the ArgumentParser for getting log filename was intercepting
that. By having it not generate its own help, we fix that issue.

stoneridge.py

@@ -42,7 +42,7 @@ CLIENT_QUEUES = {
 
 # Logging configuration
 LOG_FMT = '%(asctime)s %(pathname)s:%(lineno)d %(levelname)s: %(message)s'
-_parser = argparse.ArgumentParser()
+_parser = argparse.ArgumentParser(add_help=False)
 _parser.add_argument('--log')
 _args, _ = _parser.parse_known_args()
 if _args.log: