[jdk11u-dev] RFR: 8262894: [macos_aarch64] SIGBUS in Assembler::ld_st2

[Vladimir Kempik]

Pleas review this backport to jdk11u-dev.
It's one of few follow up fixes for jep-391 backport.
This adds missing WX transition to jni_DestroyJavaVM_inner and jni_DetachCurrentThread
Not applying clean due to context code difference in chunk 2.
In JDK17 it's  - ThreadStateTransition::transition()
in JDK11 it's - ThreadStateTransition::transition_and_fence()

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/715

Commit messages:
 - 8262894: [macos_aarch64] SIGBUS in Assembler::ld_st2

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/816/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=816&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8262894
  Stats: 8 lines in 1 file changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/816.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/816/head:pull/816

PR: https://git.openjdk.java.net/jdk11u-dev/pull/816