RFR: 8223187: Investigate setLocale() call in jpackage native launcher

[Alexander Matveev]

setlocale() affects several C functions. We do not use most of these functions. We only using isspace() and toLower().
Based on how we use it I do not see any needs for setlocale(). After removing it I retested jpackage by changing
locally on machine and using different language as input parameters for jpackage. No issues found.

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Commit messages:
 - 8223187: Investigate setLocale() call in jpackage native launcher

Changes: https://git.openjdk.java.net/jdk/pull/138/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=138&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8223187
  Stats: 3 lines in 2 files changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/138.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/138/head:pull/138

PR: https://git.openjdk.java.net/jdk/pull/138