8381379: Support std/dstOffset attributes in CLDR's metazone definitions

[rm-gh-8]

Backporting JDK-8381379: Support std/dstOffset attributes in CLDR's metazone definitions.

This PR fixes the time zone name formatting for zones like Europe/Dublin by following the explicit metazone dstOffset attribute.

This PR is not clean because of a merge conflict in the copyright header in DateTimeFormatterBuilder.java and a merge conflict in the bug list of TimeZoneNamesTest.java, due to skipped commits relating to CLDR 48+ which is not in Java 25.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/jdk/sun/util/resources/cldr

Results:

windows-x64-specific-test.log
macos-aarch64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• JDK-8381379 needs maintainer approval
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Integration blocker

 ⚠️ Dependency #752 must be integrated first

Issue

• JDK-8381379: Support std/dstOffset attributes in CLDR's metazone definitions (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/762/head:pull/762
$ git checkout pull/762

Update a local copy of the PR:
$ git checkout pull/762
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/762/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 762

View PR using the GUI difftool:
$ git pr show -t 762

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/762.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back rmesde! A progress list of the required criteria for merging this PR into pr/752 will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (367e47af)

[shipilev]

I see that @gnu-andrew was first to publish: #757. I suggest to close this PR and cooperate in the first one. You are in the perfect position to cross-check Andrew's work :)

[rm-gh-8]

@shipilev Please take a look at #752 . This is a dependent PR.

[rm-gh-8]

This matters to us, so I'll keep it open until the duplicate has been merged.

[rm-gh-8]

Discussed offline. Withdrawing PR due to duplication.

[gnu-andrew]

I see that @gnu-andrew was first to publish: #757. I suggest to close this PR and cooperate in the first one. You are in the perfect position to cross-check Andrew's work :)

Thanks. I've been watching the tzdata bug for a while (see my comments there) and wasn't aware anyone else was working on it. Still plenty to do on backports to the older JDKs too.