(tz) Update Timezone Data to 2022c

The 2022c release of the tz code and data is available.

This release reflects the following changes, which do not affect
timestamps unless your system has the awk bug mentioned below:

   Briefly:
     Work around awk bug in FreeBSD, macOS, etc.
     Improve tzselect on intercontinental Zones.

   Changes to code

     Work around a bug in onetrueawk that broke commands like
     'make traditional_tarballs' on FreeBSD, macOS, etc.
     (Problem reported by Deborah Goldsmith.)

     Add code to tzselect that uses experimental structured comments in
     zone1970.tab to clarify whether Zones like Africa/Abidjan and
     Europe/Istanbul cross continent or ocean boundaries.
     (Inspired by a problem reported by Peter Krefting.)

     Fix bug with 'zic -d /a/b/c' when /a is unwritable but the
     directory /a/b already exists.

     Remove zoneinfo2tdf.pl, as it was unused and triggered false
     malware alarms on some email servers.

Here are links to the release files:

   https://www.iana.org/time-zones/repository/releases/tzcode2022c.tar.gz
   https://www.iana.org/time-zones/repository/releases/tzdata2022c.tar.gz
   https://www.iana.org/time-zones/repository/releases/tzdb-2022c.tar.lz

The following convenience links are also available, although they may
point to the previous release until the relevant caches are refreshed:

   https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz
   https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz
   https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz

Links are also available via plain HTTP, and via FTP from
ftp://ftp.iana.org/tz/releases with the same basenames as above.

Each release file has a GPG signature, which can be retrieved by
appending ".asc" to the above URLs. Copies of these signatures are
appended to this message.

This release corresponds to commit
ce4d77644d2793027bb27f095dec7b530edcd947 dated 2022-08-15 17:47:18 -0700
and tagged '2022c' in the development GitHub repository at
<https://github.com/eggert/tz>.

Here are the SHA-512 checksums for the release files:

3373fa16a12007415c3dc3a75c4a0d61d6ae54968eeecedcdf4bcfd7f554020a15c4687dde107b90462b75d848eebe1e200c33322ebe0d3f1ad11bc769cade06
  tzcode2022c.tar.gz
e2ae92abac6d87ce4ab4ba9012e868e1791b842e083293489debc0c671b9cf135b5b70426dacb6dbebbf6eba24463205225ae45bb7df891a086b25475f85ee0b
  tzdata2022c.tar.gz
e51a9044da116a52906bc0fc22a3dde0e1a6d4e486f9e610a63aa6634ccc1ebd0bc2d47d2faa84bde2b78cc890fe3fb08f6c1ac4e1e0c147d45de5c21d26b26a
  tzdb-2022c.tar.lz

Here are the GPG digital signatures for the release files:

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PS. If your tzdata parser does not yet support negative DST offsets or
times past 24:00, or if it insists on a 'pacificnew' file that is no
longer present, this release's data entries can be turned into a
rearguard-format tarball that should work even with these older parsers.
This is intended to be a temporary transition aid for these parsers. To
generate a rearguard-format tarball, obtain the full distribution as
described above, and run the command 'make DATAFORM=rearguard
tailored_tarballs' on a development host. Or you can run 'make
rearguard.zi' to generate a single file that can be fed directly to a
parser that works like 'zic'.