RFR: 8353009: Document target selection flag for Windows AArch64 builds [v4]

[Matthias Baesken]

On Tue, 15 Apr 2025 19:35:24 GMT, Saint Wesonga <duke at openjdk.org> wrote:

>> The target selection configuration flag for Windows AArch64 should be added to the build documentation for improved discoverability and completeness.
>
> Saint Wesonga has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Add Visual Studio Build Tools setup instructions
>  - Revert "Add instructions for a native Windows AArch64 build"
>    
>    This reverts commit ce4a5914f40d315f39c9593bd9cdb8aa53e33ca0.

The title 'Document target selection flag for ...' should be changed e.g. to  'Improve documentation for ...' or something like this.
(needs to be changed in JBS AND here)

doc/building.md line 1478:

> 1476: 
> 1477: ```
> 1478: bash configure --with-boot-jdk=$BOOT_JDK

Probably lines 1474 - 1479 are now not needed any more because they just state you have to set the boot jdk but that's nothing specific for these builds.

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PR Comment: https://git.openjdk.org/jdk/pull/24267#issuecomment-2808537794
PR Review Comment: https://git.openjdk.org/jdk/pull/24267#discussion_r2046184081