This reverts the System V names deprecation as they are known to break many

testsuites (cctz, dateparser, glib2.0, gnustep-base, etc.). This is basically a

partial revert of upstream commits a0b09c023008 ("Mark CET, CST6CDT etc. as

obsolescent") and 782d082623aa ("Make EET, MET and WET links")

​

--- a/backward

+++ b/backward

@@ -45,8 +45,6 @@ Link  America/Rio_Branco  Brazil/Acre #= America/Porto_Acre

 Link   America/Noronha     Brazil/DeNoronha

 Link   America/Sao_Paulo   Brazil/East

 Link   America/Manaus      Brazil/West

-Link   Europe/Brussels     CET

-Link   America/Chicago     CST6CDT

 Link   America/Halifax     Canada/Atlantic

 Link   America/Winnipeg    Canada/Central

 # This line is commented out, as the name exceeded the 14-character limit

@@ -61,9 +59,6 @@ Link  America/Whitehorse  Canada/Yukon

 Link   America/Santiago    Chile/Continental

 Link   Pacific/Easter      Chile/EasterIsland

 Link   America/Havana      Cuba

-Link   Europe/Athens       EET

-Link   America/Panama      EST

-Link   America/New_York    EST5EDT

 Link   Africa/Cairo        Egypt

 Link   Europe/Dublin       Eire

 # Vanguard section, for most .zi parsers.

@@ -102,9 +97,6 @@ Link America/Jamaica     Jamaica

 Link   Asia/Tokyo      Japan

 Link   Pacific/Kwajalein   Kwajalein

 Link   Africa/Tripoli      Libya

-Link   Europe/Brussels     MET

-Link   America/Phoenix     MST

-Link   America/Denver      MST7MDT

 Link   America/Tijuana     Mexico/BajaNorte

 Link   America/Mazatlan    Mexico/BajaSur

 Link   America/Mexico_City Mexico/General

@@ -299,7 +291,6 @@ Link    Europe/Kyiv     Europe/Zaporozhye

 Link   Pacific/Kanton      Pacific/Enderbury

 Link   Pacific/Honolulu    Pacific/Johnston

 Link   Pacific/Port_Moresby    Pacific/Yap

-Link   Europe/Lisbon       WET

 # Alternate names for the same location

@@ -325,7 +316,5 @@ Link    Europe/Kyiv     Europe/Kiev

 # Classically, Cyprus is in Asia; e.g. see Herodotus, Histories, I.72.

 # However, for various reasons many users expect to find it under Europe.

 Link   Asia/Nicosia        Europe/Nicosia

-Link   Pacific/Honolulu    HST

-Link   America/Los_Angeles PST8PDT

 Link   Pacific/Guadalcanal Pacific/Ponape  #= Pacific/Pohnpei

 Link   Pacific/Port_Moresby    Pacific/Truk    #= Pacific/Chuuk

--- a/backzone

+++ b/backzone

@@ -1827,27 +1827,6 @@ Zone Pacific/Wake    11:06:28 -  LMT 1901

 Zone   Pacific/Wallis  12:15:20 -  LMT 1901

            12:00   -   +12

-

-# From Paul Eggert (2024-05-22):

-# The following zones pretend that standard time extends backward

-# indefinitely into the past, and so are ahistorical.

-# In current TZDB these entries are links to geographical locations

-# that agree with the ahistorical zones since 1970.

-# These are in numeric rather than alphabetic order.

-

-# Zone NAME        STDOFF  RULES   FORMAT  [UNTIL]

-Zone   HST     -10:00  -   HST

-Zone   PST8PDT      -8:00  US  P%sT

-Zone   MST      -7:00  -   MST

-Zone   MST7MDT      -7:00  US  M%sT

-Zone   CST6CDT      -6:00  US  C%sT

-Zone   EST      -5:00  -   EST

-Zone   EST5EDT      -5:00  US  E%sT

-Zone   WET       0:00  EU  WE%sT

-Zone   CET       1:00  C-Eur   CE%sT

-Zone   MET       1:00  C-Eur   ME%sT

-Zone   EET       2:00  EU  EE%sT

-

 # Local Variables:

 # coding: utf-8

 # End:

--- a/europe

+++ b/europe

@@ -730,6 +730,14 @@ Rule   Russia  1996    2010    -   Oct lastSun  2:00s  0   -

 # Take "abolishing daylight saving time" to mean that time is now considered

 # to be standard.

+# These are for backward compatibility with older versions.

+

+# Zone NAME        STDOFF  RULES   FORMAT  [UNTIL]

+Zone   WET     0:00    EU  WE%sT

+Zone   CET     1:00    C-Eur   CE%sT

+Zone   MET     1:00    C-Eur   ME%sT

+Zone   EET     2:00    EU  EE%sT

+

 # Previous editions of this database used abbreviations like MET DST

 # for Central European Summer Time, but this didn't agree with common usage.

--- a/northamerica

+++ b/northamerica

@@ -188,6 +188,26 @@ Rule   US  1987    2006    -   Apr Sun>=1  2:00    1:00    D

 Rule   US  2007    max -   Mar Sun>=8  2:00    1:00    D

 Rule   US  2007    max -   Nov Sun>=1  2:00    0   S

+# From Arthur David Olson, 2005-12-19

+# We generate the files specified below to guard against old files with

+# obsolete information being left in the time zone binary directory.

+# We limit the list to names that have appeared in previous versions of

+# this time zone package.

+# We do these as separate Zones rather than as Links to avoid problems if

+# a particular place changes whether it observes DST.

+# We put these specifications here in the northamerica file both to

+# increase the chances that they'll actually get compiled and to

+# avoid the need to duplicate the US rules in another file.

+

+# Zone NAME        STDOFF  RULES   FORMAT  [UNTIL]

+Zone   EST      -5:00  -   EST

+Zone   MST      -7:00  -   MST

+Zone   HST     -10:00  -   HST

+Zone   EST5EDT      -5:00  US  E%sT

+Zone   CST6CDT      -6:00  US  C%sT

+Zone   MST7MDT      -7:00  US  M%sT

+Zone   PST8PDT      -8:00  US  P%sT

+

 # From U. S. Naval Observatory (1989-01-19):

 # USA  EASTERN       5 H  BEHIND UTC    NEW YORK, WASHINGTON

 # USA  EASTERN       4 H  BEHIND UTC    APR 3 - OCT 30

​