8340906: [Lilliput/JDK21] Fix CDS related issues

[rkennke]

This backports some CDS related fixes and improvements:

• Build machinery to build _coh CDS archives, those are generated with +UCOH and are selected by default when running with +UCOH. This is similar to how we create and use _nocoops archives.
• Some adjustments in tests to deal with the _coh CDS archive (including some reversals of earlier changes which are no longer necessary).
• A bugfix in the ArchiveHeapWriter which would sometimes write invalid narrowKlass with +UCOH.

The change reflects what is proposed in openjdk/jdk#20677

Testing:
Together with #35, this makes all tier1-4 pass with +UCOH and with -UCOH.

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
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Issue

• JDK-8340906: [Lilliput/JDK21] Fix CDS related issues (Bug - P2)

Reviewers

• Aleksey Shipilev (@shipilev - Committer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/lilliput-jdk21u.git pull/36/head:pull/36
$ git checkout pull/36

Update a local copy of the PR:
$ git checkout pull/36
$ git pull https://git.openjdk.org/lilliput-jdk21u.git pull/36/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 36

View PR using the GUI difftool:
$ git pr show -t 36

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/lilliput-jdk21u/pull/36.diff

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[bridgekeeper]

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[openjdk]

@rkennke This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8340906: [Lilliput/JDK21] Fix CDS related issues

Reviewed-by: shade

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[mlbridge]

Webrevs

• 00: Full (f0db3058)

[rkennke]

/intergrate

[openjdk]

@rkennke Unknown command intergrate - for a list of valid commands use /help.

[rkennke]

/integrate

[openjdk]

Going to push as commit c861288.
Since your change was applied there has been 1 commit pushed to the lilliput branch:

• d5288df: 8340901: [Lilliput/JDK21] Disable some vectorization tests

Your commit was automatically rebased without conflicts.

[openjdk]

@rkennke Pushed as commit c861288.

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