<i18n dev> RFR: 8296246: Update Unicode Data Files to Version 15.1.0 [v3]

[Erik Joelsson]

On Mon, 18 Sep 2023 18:33:20 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> This PR is to incorporate the latest Unicode 15.1, which was released yesterday. Besides the usual character data update, an upgraded implementation of RegEx which reflects the Indic Conjunct Break specified in the latest [Unicode Annex #29 ("Unicode Text Segmentation")](https://unicode.org/reports/tr29/) is included. A corresponding 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 10 additional commits since the last revision:
> 
>  - Fix GensrcRegex.gmk
>  - Merge branch 'master' into JDK-8296246-Unicode15.1
>  - Update make/jdk/src/classes/build/tools/generateextraproperties/GenerateExtraProperties.java
>    
>    Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>
>  - Update make/jdk/src/classes/build/tools/generateextraproperties/GenerateExtraProperties.java
>    
>    Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>
>  - TR29 final version
>  - .md file update
>  - Final 8/28
>  - Draft 8/11
>  - GenerateExtraProperties tool
>  - initial commit

Build changes look good.

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Marked as reviewed by erikj (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/15728#pullrequestreview-1631860355