[lworld] RFR: 8294866: [lworld] Array classes access flags should include identiy bits

[Roger Riggs]

Update java.lang.reflect.AccessFlag to return IDENTITY for array classes.
The access flag bits for arrays come from the VM, hence the changes to HotSpot.

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Commit messages:
 - Correct bugid references
 - 8294866: [lworld] Array classes modifier mask should include identity bits

Changes: https://git.openjdk.org/valhalla/pull/1141/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1141&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294866
  Stats: 23 lines in 7 files changed: 14 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/valhalla/pull/1141.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1141/head:pull/1141

PR: https://git.openjdk.org/valhalla/pull/1141