Sync zoneinfo database with tzdata2011n from munnari.oz.au

Sync zoneinfo database with tzdata2011n from munnari.oz.au

australasia:    8.28 -> 8.29
backward:       8.10 -> 8.11
europe:         8.39 -> 8.40
northamerica:   8.50 -> 8.51
zone.tab:       8.50 -> 8.52

* australasia: Fiji has altered the end date for summer time this
    summer, moving it from February to January. It is by no means sure
    it won't shift again, but this does appear to be the current plan.

* backward, europe, zone.tab: Pridnestrovian Moldavian Republic
    (Europe/Tiraspol) has not followed much of Russia, and will not
    retain summer time - rather reverting to standard time along with
    western Europe, and Ukraine, on Oct 30, as it was earlier scheduled
    to do. This removes the Europe/Tiraspol zone (again) as the
    variation never actually happened (and returns the entry in the
    "backward" file).

* northamerica: Cuba (America/Havana) has extended summer time by two
    weeks, now to end on Nov 13, rather than the (already past) Oct 30.