RFR: JDK-8289147: unify os::infinite_sleep on posix platforms

[Martin Doerr]

On Fri, 24 Jun 2022 14:50:25 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> os::infinite_sleep could be unified on the POSIX platforms (linux, bsd, aix).

LGTM.

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Marked as reviewed by mdoerr (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9279