[lworld] Integrated: 8327080: [lworld] Update Valhalla micros to JEP 401

[Roger Riggs]

On Thu, 29 Feb 2024 22:44:12 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> A bulk update to change "primitive class" to "value class, remove .ref and replace .default with no-arg constructor. 
> Plus other changes to get the benchmarks to compile.
> 
> No assertions are made beyond compilation.  The generated benchmarks.jar is well formed and can list the benchmarks.
> 
> The makefile rule build-microbenchmark is re-enabled for the `test` target.

This pull request has now been integrated.

Changeset: d632066e
Author:    Roger Riggs <rriggs at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/d632066e9460c53eaae81c480771f14dcc569e8f
Stats:     707 lines in 116 files changed: 75 ins; 2 del; 630 mod

8327080: [lworld] Update Valhalla micros to JEP 401

Reviewed-by: mchung

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PR: https://git.openjdk.org/valhalla/pull/1028