[jdk17u-dev] RFR: 8272352: Java launcher can not parse Chinese character when system locale is set to UTF-8

[Stephanie Crater]

Backport to allow java to correctly parse Chinese characters in file paths and string arguments passed to java.exe.

Java runtime has been detecting the Windows system locale encoding using `GetLocaleInfo(GetSystemDefaultLCID(), LOCALE_IDEFAULTANSICODEPAGE, ...)`, but it returns the _legacy_ ANSI code page value, e.g, 1252 for US-English. In order to detect whether the user has selected `UTF-8` as the default, the code page has to be queried with `GetACP()`.
Also, the case if the call to `GetLocaleInfo` fails changed to fall back to `UTF-8` instead of `Cp1252`.

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Commit messages:
 - 8272352: Java launcher can not parse Chinese character when system locale is set to UTF-8

Changes: https://git.openjdk.org/jdk17u-dev/pull/522/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=522&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8272352
  Stats: 15 lines in 1 file changed: 6 ins; 4 del; 5 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/522.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/522/head:pull/522

PR: https://git.openjdk.org/jdk17u-dev/pull/522