J.u.logging uses j.t.Instant to store LogRecord time stamps. XMLFormatter format is updated to allow for a new optional <nanos> element containing a nano second adjustment. SimpleFormatter passes a ZonedDateTime object to String.format. LogRecord getMillis/setMillis are deprecated, replaced by getInstant/setInstant.
Co-authored-by: Peter Levart <peter.levart@gmail.com>
Reviewed-by: scolebourne, plevart, rriggs
