CVS log for src/include/tzfile.h

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Sync with tzcode2024a:
Release 2024a - 2024-02-01 09:28:56 -0800

  Changes to code

    The FROM and TO columns of Rule lines can no longer be "minimum"
    or an abbreviation of "minimum", because TZif files do not support
    DST rules that extend into the indefinite past - although these
    rules were supported when TZif files had only 32-bit data, this
    stopped working when 64-bit TZif files were introduced in 1995.
    This should not be a problem for realistic data, since DST was
    first used in the 20th century.  As a transition aid, FROM columns
    like "minimum" are now diagnosed and then treated as if they were
    the year 1900; this should suffice for TZif files on old systems
    with only 32-bit time_t, and it is more compatible with bugs in
    2023c-and-earlier localtime.c.  (Problem reported by Yoshito
    Umaoka.)

    localtime and related functions no longer mishandle some
    timestamps that occur about 400 years after a switch to a time
    zone with a DST schedule.  In 2023d data this problem was visible
    for some timestamps in November 2422, November 2822, etc. in
    America/Ciudad_Juarez.  (Problem reported by Gilmore Davidson.)

    strftime %s now uses tm_gmtoff if available.  (Problem and draft
    patch reported by Dag-Erling Smørgrav.)

  Changes to build procedure

    The leap-seconds.list file is now copied from the IERS instead of
    from its downstream counterpart at NIST, as the IERS version is
    now in the public domain too and tends to be more up-to-date.
    (Thanks to Martin Burnicki for liaisoning with the IERS.)

  Changes to documentation

    The strftime man page documents which struct tm members affect
    which conversion specs, and that tzset is called.  (Problems
    reported by Robert Elz and Steve Summit.)

sync with tzcode 2023c

whitespace changes from tzcode2022a->tzcode2022b

Mostly merge changes from HEAD upto 20200411

Sync with 2019b (field name change)

Sync with HEAD

merge tzcode 2019a

updatre with latest from tzcode.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22270, verified by myself.

Merge in recent changes from the private version of this header distributed
with tzcode.

merge lite-2

import lite-2

add parens in isleap() for gcc -Wall

new RCS ID format.

Add RCS identifiers.

initial import of 386bsd-0.1 sources

Initial revision