[jdk17] RFR: 8268778: CDS check_excluded_classes needs DumpTimeTable_lock

[Ioi Lam]

Please  review this clean backport from openjdk/jdk to jdk17.

Since the fix may impact timing and locking order, I decided to apply the fix in the mainline repo first. After 2 weeks of testing there, no problems are found. So it should be safe to integrate the fix into JDK 17.

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Commit messages:
 - 8268778: CDS check_excluded_classes needs DumpTimeTable_lock

Changes: https://git.openjdk.java.net/jdk17/pull/220/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=220&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268778
  Stats: 10 lines in 3 files changed: 5 ins; 3 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/220.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/220/head:pull/220

PR: https://git.openjdk.java.net/jdk17/pull/220