Summary:
- Add a proper mailKey field to make these things mailable. Backfill all
existing objects.
- Denormalize authorPHID to the commit object so we can query by it
efficiently in a future diff. We currently use the search engine to drive
"commits by author" but that's not so good for audit, which needs more
constraints.
- Add an overall audit status field so we can efficiently query "commits that
needs your attention".
- Add enough code to convince myself that these fields are basically
reasonable and work correctly.
Test Plan:
- Ran schema upgrades. Checked database state afterward.
- Ran "reparse.php --owners --herald" to verify worker changes.
- Looked at a commit, altered aggregate status via audits / reparse.php,
verified it responded correctly.
Reviewers: btrahan, jungejason
Reviewed By: jungejason
CC: aran, epriestley, nh
Maniphest Tasks: T904
Differential Revision: https://secure.phabricator.com/D1706
