Improve the output of condensediffs.
Review Request #5871 — Created May 24, 2014 and submitted — Latest diff uploaded
condensediffs will now show a percentage of completion, making it easier
to see how much longer the operation will take. It also formats the
resulting byte counts with commas, for readability.
Ran and saw the percentage indicators.
After it reached 100%, the resulting bytes were displayed in human-readable form.