This changeset reverts some or all edits made in changesets 173000696, 173002144, 173274396, 173310711, 173396387, 173398708, 173405472, 173405489, 173406281, 173407663, 173411966, 173412037, 173413642, 173522983, 173523025, 173526591, 173532110, 173537115, 173537201, 173537566, 173537577, 173567414, 173568816, 173568825, 173569415, 173572590, 173575597, 173576971, 173578818, 173617435, 173622992, 173623049, 173625046, 173625136, 173627634, 173629729, 173629997, 173630036, 173655995, 173669185, 173669460, 173670332, 173671229, 173701491, 173702093, 173702125, 173704851, 173705154, 173707634, 173745320, 173781490, 173781824, 173782059, 173782204, 173782501, 173782713, 173782850, 173783380, 173783873, 173785178, 173868741, 173869522, 173870802, 173871071, 173873010, 173873392, 173916498, 173918494, 173919059, 173924349, 173928685, 173929349, 173960990, 174020402, 174224260, 174226303.