RFR: JDK-8273979: move some os time related functions to os_posix for POSIX platforms [v2]

[David Holmes]

On Tue, 21 Sep 2021 07:01:20 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> There are a couple of time related functions in os_<platform> for Linux, BSD+Mac and AIX that are pretty similar (or identical) across the platforms and can be centralized in os_posix .
>> While doing so, I noticed that  os::supports_vtime()   returns always true , on Posix and also on Windows, so we might remove it completely if this prefered ? 
>> 
>> Best regards , Matthias
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Restored javaTimeNanos_info in os-files, adjusted clock_tics_per_sec init

Thanks Matthias - updates look good.

David

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Marked as reviewed by dholmes (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5582