Sync zoneinfo database with tzdata2010n from elsie.nci.nih.gov
Theory: 8.4 -> 8.5
asia: 8.61 -> 8.62
australasia: 8.18 -> 8.19
factory: 8.2 -> n/a
zone.tab: 8.37 -> 8.38
* Remove the 'factory' file and references to it. It is no longer needed.
* asia: No DST in Hong Kong in 1977 (thanks to Jesper Norgaard for
finding the problem).
* australasia: Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to
2011-04-03 1:00 (thanks to Raymond Hughes for a reference).
* zone.tab: Remove obsolete association of Vostok Station with South
Magnetic Pole; add association with Lake Vostok (thanks to
Petr Machata for finding the problem).