RFR: 8318410: [TESTBUG] jdk/java/lang/instrument/BootClassPath/BootClassPathTest.sh fails on Japanese Windows

[Kimura Yukihiro]

I would like to fix this issue
because the test dose not work as intended.
Could someone please review it? 

Thanks,
Kimura Yukihiro

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Commit messages:
 - 8318410: [TESTBUG] jdk/java/lang/instrument/BootClassPath/BootClassPathTest.sh fails on Japanese Windows

Changes: https://git.openjdk.org/jdk/pull/16235/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16235&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318410
  Stats: 39 lines in 2 files changed: 20 ins; 0 del; 19 mod
  Patch: https://git.openjdk.org/jdk/pull/16235.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16235/head:pull/16235

PR: https://git.openjdk.org/jdk/pull/16235