RFR: JDK-8273815: move have_special_privileges to os_posix for POSIX platforms [v2]

[David Holmes]

On Fri, 17 Sep 2021 14:45:09 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> We have identical have_special_privileges() for Linux/AIX/BSD so the function is a good candidate to be moved to os_posix.
>> 
>> Thanks, Matthias
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Simplification proposed by Thomas Stuefe

As an equivalent refactoring this is fine.

We could also do the initialization is os::init() but it makes little, if any difference.

Thanks,
David

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Marked as reviewed by dholmes (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5540