[lworld] RFR: Merge jdk [v3]

[David Simms]

> Merge jdk-26+6

David Simms has updated the pull request incrementally with one additional commit since the last revision:

  Adjust testing

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/1601/files
  - new: https://git.openjdk.org/valhalla/pull/1601/files/cdc55989..b915b9a2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1601&range=02
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1601&range=01-02

  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1601.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1601/head:pull/1601

PR: https://git.openjdk.org/valhalla/pull/1601