RFR: 8286601: Mac Aarch: Excessive warnings to be ignored for build jdk

[Adam Farley]

These warnings are ignored while building the build+full jdks with gcc,
but only ignored while building the full JDK if using clang. This
produces tons of warnings we normally ignore, e.g. unused parameter.

I suggest that if we're ignoring this type of error while using gcc,
we should also ignore them while using clang.

Signed-off-by: Adam Farley <adfarley at redhat.com>

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Commit messages:
 - 8286601: Mac Aarch: Excessive warnings to be ignored for build jdk

Changes: https://git.openjdk.java.net/jdk/pull/8665/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8665&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286601
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8665.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8665/head:pull/8665

PR: https://git.openjdk.java.net/jdk/pull/8665