QTimeZonePrivate::dataForLocalTime() needs a transition before the
time it starts at; MS's time-zone data tends to omit old zones (before
2007, in the case of Win7 for Casablanca - which had interesting
transitions before that), so all we can do is extrapolate backwards
from there; but a first rule is indeed apt to be a no-transition rule,
describing the zone's status up to the first known transition. So
fake a "start of time" transition to return for this case, that
describes this prefix of history.
Change-Id: Iaf178cbebc3b1e599cbde3437a0af75d9f6ca432
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
6deb0f0dcc