[Bug #20327] Do not count subsecond to calculate UTC offset

	Assume that there will never be any time zones with UTC offsets that
	are subseconds.  Historically, UTC offset has only been used down to
	the second.
	---
	 test/ruby/test_time_tz.rb | 8 ++++++++
	 time.c                    | 2 +-
	 2 files changed, 9 insertions(+), 1 deletion(-)