RFR: 7930: Upgrade to Eclipse 2022-09

Tue Oct 18 23:14:24 UTC 2022

Upgrading to Eclipse 2022 proved a little bit more complicated that previous upgrades. See https://github.com/eclipse-platform/eclipse.platform.common/blob/master/bundles/org.eclipse.platform.doc.isv/porting/4.25/incompatibilities.html.

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Commit messages:
 - Moving to JUnit 4 just to keep things easy
 - Fixing some problems due to the new platform
 - 7930: Upgrade to Eclipse 2022-09

Changes: https://git.openjdk.org/jmc/pull/442/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=442&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-7930
  Stats: 111 lines in 17 files changed: 43 ins; 37 del; 31 mod
  Patch: https://git.openjdk.org/jmc/pull/442.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/442/head:pull/442

PR: https://git.openjdk.org/jmc/pull/442