RFR: 8343070: Enable is_trace_align_vector when TraceSuperWord is set

[Hamlin Li]

Hi,
Can you help to review this simple patch?
Currently, in SuperWord::filter_packs_for_alignment(), there is some log not turned on when TraceSuperWord is set, but I think it should, as it's more convenient for users to debug.
Thanks!

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Commit messages:
 - initial commit
 - Merge branch 'openjdk:master' into master
 - Merge branch 'openjdk:master' into master
 - Revert "initial commit"
 - initial commit

Changes: https://git.openjdk.org/jdk/pull/21715/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21715&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343070
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21715.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21715/head:pull/21715

PR: https://git.openjdk.org/jdk/pull/21715