RFR: 8350703: Add standard system property stdin.encoding [v2]

[Stuart Marks]

On Wed, 23 Apr 2025 01:34:42 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> Stuart Marks has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update sun.stdout/err.encoding comments; tweak Windows file handle variable name.
>
> src/java.base/windows/native/libjava/java_props_md.c line 637:
> 
>> 635: 
>> 636:         {
>> 637:             HANDLE hStdIn;
> 
> Instead of creating a new variable, `hStdOutErr` could be reused with a proper name.

OK I merged the local variables into a single one named `hStdHandle`. I'm not sure that's the best name. I surmise that the `h` prefix is "Hungarian Notation" to indicate that it's a handle, though it makes the name kind of redundant.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24738#discussion_r2056539283