[lilliput-jdk17u:lilliput] RFR: 8308411: [Lilliput/JDK17] Cherry-pick: 8283710: JVMTI: Use BitSet for object marking [v5]

[Roman Kennke]

> This ports the original https://github.com/openjdk/jdk/pull/7964 to Lilliput/JDK17. It also includes the follow-up (cosmetic) fixes https://bugs.openjdk.org/browse/JDK-8284687 and https://bugs.openjdk.org/browse/JDK-8284725.
> 
> Testing:
>  - [x] tier1
>  - [x] com/sun/jdi
>  - [x] serviceability/jvmti
>  - [x] vmTestbase/nsk/jdi
>  - [ ] vmTestbase/nsk/jdwp
>  - [x] vmTestbase/nsk/jvmti

Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:

  Revert JVMTI changes and ProblemList

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

Changes:
  - all: https://git.openjdk.org/lilliput-jdk17u/pull/21/files
  - new: https://git.openjdk.org/lilliput-jdk17u/pull/21/files/3f81c16c..d4f327f6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=21&range=04
 - incr: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=21&range=03-04

  Stats: 95 lines in 2 files changed: 0 ins; 95 del; 0 mod
  Patch: https://git.openjdk.org/lilliput-jdk17u/pull/21.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/21/head:pull/21

PR: https://git.openjdk.org/lilliput-jdk17u/pull/21