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Update our mapping of Windows time zone names using CLDR info.
This corrects a bunch of entries in win32_tzmap[], and adds a few new ones, based on the CLDR project's windowsZones.xml file. Non-cosmetic changes fall into four main categories: * Flat-out errors: US/Aleutan doesn't exist America/Salvador doesn't exist Asia/Baku is wrong for Yerevan Asia/Dhaka (Bangladesh) is wrong for Astana (Kazakhstan) Europe/Bucharest is wrong for Chisinau America/Mexico_City is wrong for Chetumal America/Buenos_Aires is wrong for Cayenne America/Caracas has its own zone, so poor fit for La Paz US/Eastern is wrong for Haiti US/Eastern is wrong for Indiana (East) Asia/Karachi is wrong for Tashkent Etc/UTC+12 doesn't exist Signs of Etc/GMT zones were backwards * Judgment calls: (These changes follow CLDR's choices, except for the first one) Use Europe/London for "Greenwich Standard Time", since that seems much more likely than Africa/Casablanca to be what people will think that zone name means. CLDR has Atlantic/Reykjavik here, but that's no better. Asia/Shanghai seems a better fit than Hong Kong for "China Standard Time". Europe/Sarajevo is now a link to Belgrade, ie "Central Europe Standard Time"; so use Warsaw for "Central European Standard Time". America/Sao_Paulo seems more representative than Araguaina for "E. South America Standard Time". Africa/Johannesburg seems more representative than Harare for "South Africa Standard Time". * New Windows zone names: "Israel Standard Time" "Kaliningrad Standard Time" "Russia Time Zone N" for various N "Singapore Standard Time" "South Sudan Standard Time" "W. Central Africa Standard Time" "West Bank Standard Time" "Yukon Standard Time" Some of these replace older spellings, but I kept the older spellings too in case our code runs on a machine with the older data. * Replace aliases (tzdb Links) with underlying city-named zones: (This tracks tzdb's longstanding practice, and reduces inconsistency with the rest of the entries, as well as with CLDR.) US/Alaska Asia/Kuwait Asia/Muscat Canada/Atlantic Australia/Canberra Canada/Saskatchewan US/Central US/Eastern US/Hawaii US/Mountain Canada/Newfoundland US/Pacific Back-patch to all supported branches, as is our usual practice for time zone data updates. Discussion: https://postgr.es/m/3266414.1633045628@sss.pgh.pa.us
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