[jdk11u-dev] RFR: 8310201: Reduce verbose locale output in -XshowSettings launcher option

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport f6e23ae4519f8eb877ae28a0bfbb4820c9718f91

Changes: https://git.openjdk.org/jdk11u-dev/pull/2730/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2730&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310201
  Stats: 22 lines in 2 files changed: 15 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2730.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2730/head:pull/2730

PR: https://git.openjdk.org/jdk11u-dev/pull/2730