[jdk11u-dev] RFR: 8252114: Windows-AArch64: Enable and test ZGC and ShenandoahGC [v3]

[Reka Kovacs]

> The original commit and the backport don't have a lot to do with each other quite honestly, but they both fit under the JBS issue. The original commit enabled ZGC for Windows/AArch64 (Shenandoah was already enabled on all AArch64 platforms), while this one enables Shenandoah.
> 
> Depends on #301.
> 
> This is part of the Windows/AArch64 port.

Reka Kovacs has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  Backport 96f722cf63ae0e115612d816aa339d38074d3ade

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Changes: https://git.openjdk.java.net/jdk11u-dev/pull/304/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=304&range=02
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/304.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/304/head:pull/304

PR: https://git.openjdk.java.net/jdk11u-dev/pull/304