RFR: 8350457: Support Compact Object Headers as product option [v2]

[Roman Kennke]

> As title says.

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

  Remove +UnlockExperimentalOptions from tests

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24522/files
  - new: https://git.openjdk.org/jdk/pull/24522/files/31035040..56a50df8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24522&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24522&range=00-01

  Stats: 81 lines in 23 files changed: 0 ins; 12 del; 69 mod
  Patch: https://git.openjdk.org/jdk/pull/24522.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24522/head:pull/24522

PR: https://git.openjdk.org/jdk/pull/24522