RFR: 8284752: Zero does not build on Mac OS X due to missing os::current_thread_enable_wx implementation [v2]

[Johannes Bechberger]

> Adds an implementation of the missing method (guarded with `defined(AARCH64) && defined(__APPLE__)`) and fixes the compilation issues on Mac M1.

Johannes Bechberger has updated the pull request incrementally with one additional commit since the last revision:

  Add newline

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8200/files
  - new: https://git.openjdk.java.net/jdk/pull/8200/files/cdcbe10a..fa7af7e0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8200&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8200&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8200.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8200/head:pull/8200

PR: https://git.openjdk.java.net/jdk/pull/8200