RFR: 7769: Cleanup pom and project files for JMC core [v4]

Tue May 3 18:00:27 UTC 2022

On Wed, 27 Apr 2022 21:00:42 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> There is a lot of redundancy, whitespace errors, inconsistencies, obsolete stuff, errors, outdated plugin versions etc. in JMC core pom and project files.
>> 
>> org.openjdk.jmc.flightrecorder.writer.test and org.openjdk.jmc.jdp.test have been refactored in terms of layout like the other test projects.
>
> Christoph Langer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix merge error

Marked as reviewed by hirt (Lead).

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PR: https://git.openjdk.java.net/jmc/pull/398