[jdk25u-dev] RFR: 8370244: [PPC64] Several vector tests fail on Power8

[Martin Doerr]

Clean backport of [JDK-8370244](https://bugs.openjdk.org/browse/JDK-8370244).

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Commit messages:
 - Backport cbd77fc9f3e6c8f1e996b30afe208c6a074cce3a

Changes: https://git.openjdk.org/jdk25u-dev/pull/16/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=16&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370244
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/16.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/16/head:pull/16

PR: https://git.openjdk.org/jdk25u-dev/pull/16