RFR: 8305765: CompressedClassPointers.java is unreliable due to ASLR

[Ioi Lam]

On Mon, 2 Oct 2023 18:30:54 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> A new log statement is added to the `Metaspace::global_initialize` function to indicate that the compress class space is being allocate at an address chosen by the platform. The `CompressedClassPointers.java` test will base on the log output before checking the expected `Narrow klass base` output.
> 
> Passed tiers 1 - 3 testing.
> Also ran the test on linux-aarch64 and linux-aarch64-debug platforms, 30 times each.

LGTM.

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Marked as reviewed by iklam (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16014#pullrequestreview-1653382229