[jdk21u] RFR: 8293114: JVM should trim the native heap

[David Holmes]

On Fri, 21 Jul 2023 16:15:18 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to get the important feature to LTS users.
> 
> Additional testing:
>  - [ ] Linux AArch64 fastdebug trimming tests
>  - [ ] Linux AArch64 fastdebug `tier1`
>  - [ ] Linux AArch64 fastdebug `tier2`
>  - [ ] Linux AArch64 fastdebug `tier3`

FYI the test is failing for us in mainline [JDK-8312525](https://bugs.openjdk.org/browse/JDK-8312525)

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PR Comment: https://git.openjdk.org/jdk21u/pull/13#issuecomment-1646275182