[lilliput-jdk17u:lilliput] RFR: 8310231: [Lilliput/JDK17] Disable compact headers by default [v2]

[Aleksey Shipilev]

> Same as https://github.com/openjdk/lilliput/pull/99.
> 
> Note that I also reverted the change to `UseCompressedClassPointers`, for extra safety.
> 
> Additional testing:
>  - [x] Checked sample `@flagless` tests run with/without `UCOH`
>  - [x] Linux AArch64 tier1, out of box
>  - [x] Linux AArch64 tier1, `-XX:+UnlockExperimentalVMOptions -XX:+UseCompactObjectHeaders`
>  - [ ] Linux AArch64 tier1, `-XX:+UnlockExperimentalVMOptions -XX:-UseCompactObjectHeaders`

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Drop the UseCompressedClassPointers for another PR

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

Changes:
  - all: https://git.openjdk.org/lilliput-jdk17u/pull/33/files
  - new: https://git.openjdk.org/lilliput-jdk17u/pull/33/files/df9abf7b..348c02db

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=33&range=01
 - incr: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=33&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/lilliput-jdk17u/pull/33.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/33/head:pull/33

PR: https://git.openjdk.org/lilliput-jdk17u/pull/33