[jdk8u] RFR: 8317970: Bump target macosx-x64 version to 11.00.00 [v2]

[Andrew John Hughes]

On Sat, 20 Dec 2025 05:27:38 GMT, Alexey Bakhtin <abakhtin at openjdk.org> wrote:

>> Dirty backport of 8317970.
>> 
>> Awt2dLibraries.gmk does not have dependencies on the MACOSX_VERSION_MIN, skipped
>> 
>> changes in flags.m4 and generated-configure.sh applied manually
>
> Alexey Bakhtin has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Replace macosx to macOS

I wouldn't usually be happy with changing the copyright headers from what is used in the backport, but I think we can allow it here as changes to these Makefiles are never going to backport cleanly anyway.

If we are cleaning up the big hunk in `flags.m4`, I think we should drop the `FIXME` lines as well. I don't see this ever being moved elsewhere in 8u and we don't even have access to any "closed legacy code" to do so.

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Changes requested by andrew (Reviewer).

PR Review: https://git.openjdk.org/jdk8u/pull/82#pullrequestreview-3604445526