RFR: 8310047: Add UTF-32 based Charsets into StandardCharsets [v3]

[Lance Andersen]

On Fri, 23 Jun 2023 17:47:07 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> To make UTF-32 consistent with other UTF Charsets, making them available as `StandardCharsets`. A CSR has also been drafted.
>
> Naoto Sato has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Merge branch 'master' into JDK-8310047-UTF-32
>  - Update test/jdk/java/nio/charset/StandardCharsets/Standard.java
>    
>    Co-authored-by: ExE Boss <3889017+ExE-Boss at users.noreply.github.com>
>  - 8310047: Add UTF-32 based Charsets into StandardCharsets

Marked as reviewed by lancea (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/14599#pullrequestreview-1495609398