Summary: Ref T10978. This is just a maintenance convenience script. It can fix up overall commit state after you `bin/audit delete` stuff or nuke a bunch of stuff from the database, as I did on `secure.phabricator.com`.
Test Plan: Ran `bin/audit synchronize`, and `bin/audit update-owners`.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17271
