RFR: 8355446: Change to Xcode 15.4 for building on macOS at Oracle [v2]

[Erik Joelsson]

On Thu, 1 May 2025 19:44:55 GMT, Mikael Vidstedt <mikael at openjdk.org> wrote:

>> Oracle is updating the version of Xcode for building the JDK on macOS to Xcode 15.4.
>> 
>> Testing: tier1-5
>
> Mikael Vidstedt has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:
> 
>  - Merge master
>  - Update doc/building.md to reflect updated macOS/Xcode versions
>  - 8355446: Change to Xcode 15.4 for building on macOS at Oracle

Marked as reviewed by erikj (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24862#pullrequestreview-2812479819