[jdk20u] RFR: 8307466: java.time.Instant calculation bug in until and between methods

[Naoto Sato]

On Thu, 11 May 2023 17:58:24 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> Backport the fix for [JDK-8307466](https://bugs.openjdk.org/browse/JDK-8307466) from openjdk/jdk. 
> The implementation of java.time.Instant.until(I2, ChronoUnit) in some cases did not correctly borrow or carry from the nanos to the seconds when computing using ChronoUnit.MILLIS or ChronoUnit.MICROS.

Marked as reviewed by naoto (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk20u/pull/78#pullrequestreview-1423524426