RFR: 8272700: [macos] Build failure with Xcode 13.0 after JDK-8264848

[Jie Fu]

Hi all,

May I get reviews for this small change?

The failure is caused by incorrect flag `-mstack-alignment=16-DMAC_OS_X_VERSION_MIN_REQUIRED=10120`.

The following command works fine with Xcode 12.0 but fails with Xcode 13.0.

clang++ -mstack-alignment=16-DMAC_OS_X_VERSION_MIN_REQUIRED=10120 a.cpp


Thanks.
Best regards,
Jie

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Commit messages:
 - 8272700: [macos] Build failure with Xcode 13.0 after JDK-8264848

Changes: https://git.openjdk.java.net/jdk/pull/5180/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5180&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272700
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5180.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5180/head:pull/5180

PR: https://git.openjdk.java.net/jdk/pull/5180