RFR: 8257450: Start of release updates for JDK 17

[Joe Darcy]

Start of JDK 17 updates.

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Commit messages:
 - Update tests.
 - Merge branch 'master' into JDK-8257450
 - Merge branch 'JDK-8257450' of https://github.com/jddarcy/jdk into JDK-8257450
 - Merge branch 'JDK-8257450' of https://github.com/jddarcy/jdk into JDK-8257450
 - JDK-8257450
 - JDK-8257450
 - JDK-8257450

Changes: https://git.openjdk.java.net/jdk/pull/1531/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1531&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257450
  Stats: 7522 lines in 76 files changed: 7463 ins; 0 del; 59 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1531.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1531/head:pull/1531

PR: https://git.openjdk.java.net/jdk/pull/1531