[jdk11u-dev] RFR: 8257620: Do not use objc_msgSend_stret to get macOS version

[Vladimir Kempik]

This backport is a prerequest for macos-aarch64 ( be it zero or with jep-391)

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Commit messages:
 - Backport d4c7db5060978302382549246f9ad6831f19377d

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/171/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=171&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257620
  Stats: 9 lines in 1 file changed: 5 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/171.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/171/head:pull/171

PR: https://git.openjdk.java.net/jdk11u-dev/pull/171