Fix time change detection on UNIX systems without monotonic timers

A few fixes in one:

1. Don't loop on select() when not using monotonic timers... when
select returns, the time may have changed, and the offset calculated
in the loop may be very wrong on the next iteration.

2. Calculate the elapsed time deltas using timevals instead of
integers using milliseconds. This handles changing the time by more
than a few hours or days (i.e. months and years) without overflow.

3. When repairing the timers, the diff is already the correct sign, so
we should just add the diff.

Task-number: 250681
Reviewed-by: Thiago

0 files changed, 0 insertions, 0 deletions