RFR: 8253424: Add support for running pre-submit testing using GitHub Actions [v2]

[Aleksey Shipilev]

On Tue, 26 Jul 2022 19:05:31 GMT, Andrew John Hughes <andrew at openjdk.org> wrote:

>> Hi all,
>> 
>> This pull request contains a backport of commit [10029f78](https://github.com/openjdk/jdk8u-dev/commit/10029f784ef7be458a7b6ff3cc21649ff0abb6f3) from the [openjdk/jdk8u-dev](https://git.openjdk.java.net/jdk8u-dev) repository, which enables GitHub Actions for the Shenandoah 8u fork.
>> 
>> The commit being backported was authored by Andrew John Hughes on 6 Apr 2022 and was reviewed by Severin Gehwolf.
>> 
>> Thanks!
>
> Andrew John Hughes has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains six additional commits since the last revision:
> 
>  - Merge remote-tracking branch 'origin/master' into JDK-8253424
>  - Merge remote-tracking branch 'origin/master' into JDK-8253424
>  - 8241768: git needs .gitattributes
>    
>    Reviewed-by: erikj, jvernee, ehelin
>  - Remove specification of minor version and package release data from GCC dependency
>  - Fix JCheck tag regex
>  - Backport 10029f784ef7be458a7b6ff3cc21649ff0abb6f3

Marked as reviewed by shade (Committer).

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PR: https://git.openjdk.org/shenandoah-jdk8u/pull/3