[gobo-eiffel-develop] Preconditions in creation procedures of DT_FIXED_OFFSET_TIME_ZONE

[Colin P. A. <co...@co...>]

I have changed the m_small_enough precondition in the creation
procedures from h <= 0 to h < 0, as otherwise it was impossible to
create offsets of zero hours and a few minutes.
-- 
Colin Adams
Preston Lancashire