RFR: 7440: JMC fails on Apple M1

[Olga Mikhaltsova]

I would like to add support for the macOS AArch64 platform to JMC. 
Please review this change!

Our build for macOS AArch64 can be downloaded from here: 
https://www.azul.com/products/components/zulu-mission-control/#block-download

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Commit messages:
 - 7440: JMC fails on Apple M1

Changes: https://git.openjdk.java.net/jmc/pull/334/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=334&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7440
  Stats: 27 lines in 1 file changed: 26 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/334.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/334/head:pull/334

PR: https://git.openjdk.java.net/jmc/pull/334