RFR: Merge openjdk/jdk:master [v2]

[William Kemper]

> Merge tag jdk-20+24. This includes [8294775](https://bugs.openjdk.org/browse/JDK-8294775): Shenandoah: reduce contention on _threads_in_evac

William Kemper has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 181 commits:

 - Merge tag 'jdk-20+24' into merge-jdk-20-24
   
   Added tag jdk-20+24 for changeset 2159170b
 - Change affiliation representation
   
   Reviewed-by: ysr, wkemper
 - Improve some defaults and remove unused options for generational mode
   
   Reviewed-by: rkennke
 - Merge openjdk/jdk:master
   
   Reviewed-by: rkennke
 - Improve evacuation instrumentation
   
   Reviewed-by: kdnilsen
 - Fix preemption of coalesce and fill
   
   Reviewed-by: wkemper
 - Fix assertion error with advance promotion budgeting
   
   Reviewed-by: rkennke
 - Merge openjdk/jdk:master
 - Merge openjdk/jdk:master
 - Shenandoah unified logging
   
   Reviewed-by: wkemper, shade
 - ... and 171 more: https://git.openjdk.org/shenandoah/compare/2159170b...9611198d

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Changes: https://git.openjdk.org/shenandoah/pull/172/files
 Webrev: https://webrevs.openjdk.org/?repo=shenandoah&pr=172&range=01
  Stats: 14912 lines in 147 files changed: 13654 ins; 507 del; 751 mod
  Patch: https://git.openjdk.org/shenandoah/pull/172.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah pull/172/head:pull/172

PR: https://git.openjdk.org/shenandoah/pull/172