RFR: 8256657: Add cross-compiled build for Windows+Arm64 to submit workflow [v5]

[Magnus Ihse Bursie]

On Wed, 9 Dec 2020 07:22:51 GMT, Bernhard Urban-Forster <burban at openjdk.org> wrote:

>> This adds the cross-compiled build only, as no Windows+Arm64 machines are available on GitHub Action that we could use to run the tests.
>> 
>> Due to cross-compilation a build JDK is required. Initially I added EA builds to be downloaded from https://jdk.java.net/16/ and used for that, but then I saw how @shipiliv attempted it for the linux cross-compilation builds in https://github.com/openjdk/jdk/pull/1147.  That is using the JDK image produced by the x64 variant. This however add more stress to the "critical path", as now two more jobs depend on the x64 build first.
>> 
>> Let's see how it works out in the long-run. A Windows+AArch64 build takes 40-50min.
>
> Bernhard Urban-Forster has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits:
> 
>  - remove gtest and jtreg
>  - Merge remote-tracking branch 'upstream/master' into 8256657-win-arm64-gh-submit-workflow
>  - merge mistakes
>  - change default target to hotspot and align with updated x64 bits
>  - remove devkit usage on win-aarch64
>  - Merge remote-tracking branch 'upstream/master' into 8256657-win-arm64-gh-submit-workflow
>  - todo note for caching devkit
>  - remove release build
>  - move windows_aarch64_build next to other builds
>  - Merge remote-tracking branch 'upstream/master' into 8256657-win-arm64-gh-submit-workflow
>  - ... and 2 more: https://git.openjdk.java.net/jdk/compare/9ce3d806...c07f5d72

Marked as reviewed by ihse (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/1379