scripts:Unique error enum update for 1/25/2017

scripts:Unique error enum update for 1/25/2017

Hadn't had a spec update in quite a while so this one was huge.
Also the format of the spec itself changed which required a number of
changes to the spec parser. The spec script is still broken for the
online spec which is not valid xhtml. For this update I downloaded the
spec source and hand-edited the broken parts so that the spec parser
could deal with it. Will figure out a better solution going forward,
though.

Here's the beast of a command line for this update:
python spec.py -spec test_xhtml_spec_039.html -update -remap 214-180,3:\
269-220,3:361-289:371-299:373-301:409-334,10:470-404,12:483-416,6:\
768-625,10:948-754,2:951-756,4:970-760,8:979-769:989-778,4:1031-812,16:\
1048-828,16:1158-936:1160-937,10:1171-947,12:1189-965:1190-966,2:\
1192-968:1251-1027,33:1371-1141:1408-1175,3:1412-1178:1414-1179,2:\
1417-1181:1419-1182,15:1435-1198,2:1627-1343,7:1646-1359,2:1668-1366,2:\
1720-1383:1783-1395:1871-1449:1878-1455,16:1977-1554,5:2012-1565,9:\
1992-1559,4:1997-1563,2:2202-1615:2222-1635,2:1047-1741:2313-1844,7:\
2361-1878,5:2370-1883,6:956-2161,13:1650-2201:1672-2214:1696-2229,2:\
1729-2249,2:1759-2267,2:1793-2288,2:1982-2304,6:1990-2313:1999-2314,13:\
2366-2327,4:1159-2348:968-2524:1413-2533:1418-2534:983-772,4:2512-1680:\
2587-2040:1996-2547:1170-2525:969-2173