- fix all cases of    logging.foo(format_string % args)
- fix logging calls from logger.foo(format_string % args) into
  logger.foo(format_string, *args)
- and make a small optimization to error line accrual in
  run_and_track_hadoop_job.py
Merge pull request #205 from JonNelson/logging

Don't use string interpolating when logging, let the logging framework do that.