This changeset reverts some or all edits made in changesets 157188512, 157188911, 157410689, 157411003, 157411412, 157419015, 157419158, 157429254, 157429653, 157653835, 157654235, 157654613, 157658064, 157662671, 157667575, 157978472, 157991073, 157994822, 157995894, 157996422, 158015306, 158039164, 158047227, 158052637, 158054068, 158063816, 158068446, 158086125, 158105482.