[master] RFR: Merge jdk:jdk-26+6 [v2]

[Roman Kennke]

> Merging jdk-26+6
> Fixed some minor issues
> Re-order patches to make more sense and get clean builds and tests after each patch

Roman Kennke has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 223 commits:

 - 8347710: [Lilliput] Implement 4 byte headers
   
   Reviewed-by: stuefe
 - 8320761: [Lilliput] Implement compact identity hashcode
   
   Reviewed-by: stuefe
 - 8347711: [Lilliput] Parallel GC support for compact identity hashcode
   
   Reviewed-by: stuefe
 - 8346011: [Lilliput] Compact Full-GC Forwarding
   
   Reviewed-by: stuefe
 - Merge branch 'master' into merge-jdk-26+6
 - 8347711: [Lilliput] Parallel GC support for compact identity hashcode
   
   Reviewed-by: stuefe
 - 8347710: [Lilliput] Implement 4 byte headers
   
   Reviewed-by: stuefe
 - 8320761: [Lilliput] Implement compact identity hashcode
   
   Reviewed-by: stuefe
 - 8346011: [Lilliput] Compact Full-GC Forwarding
   
   Reviewed-by: stuefe
 - Merge branch 'master' into merge-jdk-25+23
 - ... and 213 more: https://git.openjdk.org/lilliput/compare/bf3cfbef...f18edea2

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Changes: https://git.openjdk.org/lilliput/pull/201/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput&pr=201&range=01
  Stats: 4609 lines in 150 files changed: 3488 ins; 752 del; 369 mod
  Patch: https://git.openjdk.org/lilliput/pull/201.diff
  Fetch: git fetch https://git.openjdk.org/lilliput.git pull/201/head:pull/201

PR: https://git.openjdk.org/lilliput/pull/201