[jdk11u-dev] RFR: 8283870: jdeprscan --help causes an exception when the locale is ja, zh_CN or de

[Denghui Dong]

This is a backport of JDK-8283870. It's not clean since there doesn't exist jdeprscan_de.properties in 11 and the other two files have different contexts caused by the license header.

Some developers need to use this tool to help java 11 migration, so imo it's necessary to backport it.

-------------

Commit messages:
 - Backport ef25e189c7f987b6c7b049ce481ee832cc7f70aa

Changes: https://git.openjdk.org/jdk11u-dev/pull/1585/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1585&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8283870
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1585.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1585/head:pull/1585

PR: https://git.openjdk.org/jdk11u-dev/pull/1585