Comment 25 for bug 1846354

I've added a sign-off to Jason's branch and followed up with one commit to make the upgrade fast(ish) on larger real-world data sets. Branch at:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/miker/consolidate_patron_notes_rebased-upgrade_speed-signoff