RFR: 8330989: unify os::create_binary_file across platforms [v2]

[Matthias Baesken]

On Wed, 24 Apr 2024 08:03:52 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Seems os::create_binary_file can be unified across Posix platforms. Windows is also rather similar and can be included.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   unify windows as well

Hi David, no compile or test errors have been observed in GHA or in our internal testing.
So should we keep what we have?  Or go for the '_'  prefixed flags and _open on Windows ?

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PR Comment: https://git.openjdk.org/jdk/pull/18918#issuecomment-2077235809