RFR: 7769: Cleanup pom and project files for JMC core [v2]

Thu Apr 14 21:26:28 UTC 2022

On Thu, 14 Apr 2022 20:37:58 GMT, Jean-Philippe Bempel <jpbempel at openjdk.org> wrote:

> please review the Copyright years. also all build.properties modified ones

Thanks for the review. I updated most copyrights as you suggested. There were a few files where I applied only whitespace fixes. I didn't update copyrights there but I can do it if you want.
Also, please advise regarding Datadog copyright years.

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