RFR: 7425: Make jmc8 branch 8.1.1

[Marcus Hirt]

We'll eventually do a patch release from the jmc8 branch.

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Commit messages:
 - 7425: Make jmc8 branch 8.1.1

Changes: https://git.openjdk.java.net/jmc/pull/321/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=321&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7425
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/321.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/321/head:pull/321

PR: https://git.openjdk.java.net/jmc/pull/321