[jdk8u-dev] RFR: 8257620: Do not use objc_msgSend_stret to get macOS version

[Ben Taylor]

This backports [JDK-8257620](https://bugs.openjdk.org/browse/JDK-8257620) for parity with Oracle JDK8 and OpenJDK 11+. 

The backport is not clean because [JDK-8269850](https://bugs.openjdk.org/browse/JDK-8269850) was applied first in 8u. If that change is backed out and reapplied after this backport, both are clean.

Change applied with:
- `git revert 43cfe27fa3a11dd6d4fffcb1c1336ac7fdd0233b` (backout JDK-8269850)
- `git backport --from https://github.com/openjdk/jdk d4c7db5060978302382549246f9ad6831f19377d` (apply JDK-8257620)
- `git backport --from https://github.com/openjdk/jdk 3b1b8fc646493eae5f4df828afe29abb75fa5e60gig` (re-apply JDK-826985)
- `git rebase -i HEAD~3` (squash commits)

-------------

Commit messages:
 - Backport d4c7db5060978302382549246f9ad6831f19377d

Changes: https://git.openjdk.org/jdk8u-dev/pull/153/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=153&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8257620
  Stats: 8 lines in 1 file changed: 4 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/153.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/153/head:pull/153

PR: https://git.openjdk.org/jdk8u-dev/pull/153