RFR: 8356: Cherry pick copyright changes

[Marcus Hirt]

Reviewed-by: vpurnam

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Commit messages:
 - 8349: JMC Copyright year and some http links require update

Changes: https://git.openjdk.org/jmc/pull/628/files
  Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=628&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8356
  Stats: 8131 lines in 3509 files changed: 67 ins; 0 del; 8064 mod
  Patch: https://git.openjdk.org/jmc/pull/628.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/628/head:pull/628

PR: https://git.openjdk.org/jmc/pull/628