RFR: 8264224: Add macosx-aarch64 to Oracle build configurations [v3]

[Mikael Vidstedt]

> This adds the necessary macosx-aarch64 support to the build configurations at Oracle.

Mikael Vidstedt has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into 8264224-macosx-aarch64
 - Remove SETFILE override
 - 8264224: Add macosx-aarch64 to Oracle build configurations

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3258/files
  - new: https://git.openjdk.java.net/jdk/pull/3258/files/6673a4f9..20fdddad

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3258&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3258&range=01-02

  Stats: 3451 lines in 160 files changed: 2380 ins; 555 del; 516 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3258.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3258/head:pull/3258

PR: https://git.openjdk.java.net/jdk/pull/3258