Integrated: 8350703: Add standard system property stdin.encoding

[Stuart Marks]

On Thu, 17 Apr 2025 18:59:33 GMT, Stuart Marks <smarks at openjdk.org> wrote:

> * Windows and Unix: set sprops.stdin_encoding if connected to a console
> * Add specs for stdin.encoding
> * Adjust specs to change "undefined" to "unspecified"
> * Rewrite System.in spec to refer to new property and to clarify usage with classes that perform encoding
> * Update property test

This pull request has now been integrated.

Changeset: 15f42e34
Author:    Stuart Marks <smarks at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/15f42e348d4068bd90dd75b270a372353fe0ed07
Stats:     54 lines in 7 files changed: 29 ins; 1 del; 24 mod

8350703: Add standard system property stdin.encoding

Reviewed-by: naoto, alanb

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PR: https://git.openjdk.org/jdk/pull/24738