RFR: JDK-8302040: Port fdlibm sqrt to Java [v3]

[Joe Darcy]

On Thu, 23 Feb 2023 23:30:46 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> I'll revert commenting out the intrinsic annotation before pushing.

Turns out some VM updates are needed to preserve the intrinsic if this method declaration is changed; I'll be contacting the HotSpot team for assistance.

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PR: https://git.openjdk.org/jdk/pull/12736