datetime: Update backwards file

This is just a plain copy of the most recent (2017-10)
backwards file from tzinfo.

panels/datetime/backward

@@ -1,13 +1,12 @@
-# <pre>
-# @(#)backward	8.9
 # This file is in the public domain, so clarified as of
 # 2009-05-17 by Arthur David Olson.
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
 
-Link	Africa/Asmara		Africa/Asmera
+# Link	TARGET			LINK-NAME
-Link	Africa/Bamako		Africa/Timbuktu
+Link	Africa/Nairobi		Africa/Asmera
+Link	Africa/Abidjan		Africa/Timbuktu
 Link	America/Argentina/Catamarca	America/Argentina/ComodRivadavia
 Link	America/Adak		America/Atka
 Link	America/Argentina/Buenos_Aires	America/Buenos_Aires
@@ -21,17 +20,25 @@ Link	America/Argentina/Jujuy	America/Jujuy
 Link	America/Indiana/Knox	America/Knox_IN
 Link	America/Kentucky/Louisville	America/Louisville
 Link	America/Argentina/Mendoza	America/Mendoza
+Link	America/Toronto		America/Montreal
 Link	America/Rio_Branco	America/Porto_Acre
 Link	America/Argentina/Cordoba	America/Rosario
-Link	America/St_Thomas	America/Virgin
+Link	America/Tijuana		America/Santa_Isabel
+Link	America/Denver		America/Shiprock
+Link	America/Port_of_Spain	America/Virgin
+Link	Pacific/Auckland	Antarctica/South_Pole
 Link	Asia/Ashgabat		Asia/Ashkhabad
-Link	Asia/Chongqing		Asia/Chungking
-Link	Asia/Dhaka		Asia/Dacca
-Link	Asia/Kathmandu		Asia/Katmandu
 Link	Asia/Kolkata		Asia/Calcutta
+Link	Asia/Shanghai		Asia/Chongqing
+Link	Asia/Shanghai		Asia/Chungking
+Link	Asia/Dhaka		Asia/Dacca
+Link	Asia/Shanghai		Asia/Harbin
+Link	Asia/Urumqi		Asia/Kashgar
+Link	Asia/Kathmandu		Asia/Katmandu
 Link	Asia/Macau		Asia/Macao
-Link	Asia/Jerusalem		Asia/Tel_Aviv
+Link	Asia/Yangon		Asia/Rangoon
 Link	Asia/Ho_Chi_Minh	Asia/Saigon
+Link	Asia/Jerusalem		Asia/Tel_Aviv
 Link	Asia/Thimphu		Asia/Thimbu
 Link	Asia/Makassar		Asia/Ujung_Pandang
 Link	Asia/Ulaanbaatar	Asia/Ulan_Bator
@@ -54,7 +61,9 @@ Link	America/Sao_Paulo	Brazil/East
 Link	America/Manaus		Brazil/West
 Link	America/Halifax		Canada/Atlantic
 Link	America/Winnipeg	Canada/Central
-Link	America/Regina		Canada/East-Saskatchewan
+# This line is commented out, as the name exceeded the 14-character limit
+# and was an unused misnomer.
+#Link	America/Regina		Canada/East-Saskatchewan
 Link	America/Toronto		Canada/Eastern
 Link	America/Edmonton	Canada/Mountain
 Link	America/St_Johns	Canada/Newfoundland
@@ -89,10 +98,11 @@ Link	Pacific/Auckland	NZ
 Link	Pacific/Chatham		NZ-CHAT
 Link	America/Denver		Navajo
 Link	Asia/Shanghai		PRC
-Link	Pacific/Pago_Pago	Pacific/Samoa
+Link	Pacific/Honolulu	Pacific/Johnston
-Link	Pacific/Chuuk		Pacific/Yap
-Link	Pacific/Chuuk		Pacific/Truk
 Link	Pacific/Pohnpei		Pacific/Ponape
+Link	Pacific/Pago_Pago	Pacific/Samoa
+Link	Pacific/Chuuk		Pacific/Truk
+Link	Pacific/Chuuk		Pacific/Yap
 Link	Europe/Warsaw		Poland
 Link	Europe/Lisbon		Portugal
 Link	Asia/Taipei		ROC
@@ -115,4 +125,4 @@ Link	Pacific/Pago_Pago	US/Samoa
 Link	Etc/UTC			UTC
 Link	Etc/UTC			Universal
 Link	Europe/Moscow		W-SU
-Link	Etc/UTC			Zulu
+Link	Etc/UTC			Zulu