RFR: 2313: Notify graal mailing list for intrinsic related PRs

[Yudi Zheng]

This allows Graal to act fast on intrinsic related changes.

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Commit messages:
 - 2313: Notify graal mailing list for intrinsic related PRs

Changes: https://git.openjdk.org/skara/pull/1666/files
  Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1666&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2313
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/skara/pull/1666.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1666/head:pull/1666

PR: https://git.openjdk.org/skara/pull/1666