[lworld] RFR: 8374947: [lworld] ProblemList serviceability/sa/ClhsdbTestAllocationMerge.java in Xcomp mode [v5]

[Daniel D. Daugherty]

> Trivial fixes to ProblemList various tests:
> - [JDK-8374947](https://bugs.openjdk.org/browse/JDK-8374947) [lworld] ProblemList serviceability/sa/ClhsdbTestAllocationMerge.java in Xcomp mode
> - [JDK-8374949](https://bugs.openjdk.org/browse/JDK-8374949) [lworld] ProblemList com/sun/jdi/EATests.java#id0 with --enable-preview
> - [JDK-8374951](https://bugs.openjdk.org/browse/JDK-8374951) [lworld] ProblemList misc jdk/jfr/event/oldobject tests that crash due to JDK-8374950
> 
> This is a trivial test fix for when the test is run with the `--enable-preview` option:
> - [JDK-8374952](https://bugs.openjdk.org/browse/JDK-8374952) [lworld] jdk/jfr/event/runtime/TestSyncOnValueBasedClassEvent.java still fails when run with --enable-preview

Daniel D. Daugherty has updated the pull request incrementally with one additional commit since the last revision:

  8374952: [lworld] jdk/jfr/event/runtime/TestSyncOnValueBasedClassEvent.java still fails when run with --enable-preview

-------------

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1882/files
  - new: https://git.openjdk.org/valhalla/pull/1882/files/14f05433..d02bb8ac

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1882&range=04
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1882&range=03-04

  Stats: 12 lines in 1 file changed: 10 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1882.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1882/head:pull/1882

PR: https://git.openjdk.org/valhalla/pull/1882