RFR: 8361647: Report the error reason on failed semaphore calls on macOS

[David Holmes]

On Wed, 9 Jul 2025 09:31:15 GMT, Julian Waters <jwaters at openjdk.org> wrote:

> Looks ok, I'm curious why the name of the method was changed though

The name was already a little odd because the function is `semaphore_create` not `sem_init`, but it is where `sem_init_strerror` was called from. Now it is called from all the functions so the `init` part of the name made even less sense.

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PR Comment: https://git.openjdk.org/jdk/pull/26212#issuecomment-3054979488