RFR: JDK-8247589: Implementation of Alpine Linux/x64 Port [v2]

[Aleksei Voitylov]

On Thu, 8 Oct 2020 10:58:56 GMT, Aleksei Voitylov <avoitylov at openjdk.org> wrote:

>> @voitylov For future reference please don't force-push commits on open PRs as it breaks the commit history. I can no
>> longer just look at the two most recent commits and see what they added relative to what I had previously reviewed.
>> Thanks.
>
> @dholmes-ora yes, sorry about that. I updated the branch to pull the recent changes to enable pre-submit tests and
> ensure everything is well before integration and though the branch looked good it confused the pull request. So I had
> to force push it back to the original state.

@iignatev I resolved the conflict in whitebox.cpp and fixed a minor style nit on the way. Could you take a look?

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PR: https://git.openjdk.java.net/jdk/pull/49