Sync zoneinfo database with tzdata2007f from elsie.
africa: 8.7 -> 8.8
australasia: 8.6 -> 8.7
northamerica: 8.16 -> 8.17
From Paul Eggert's comments:
Changes affecting current time stamps:
* Haiti no longer observes DST. (Thanks to Stephen Colebourne for this.)
Changes affecting past and future time stamps:
* The Turks and Caicos switch at 02:00, not at 00:00, and have adopted
US DST rules. (Thanks to Chris Dunn and Brian Inglis for this.)
Changes affecting future time stamps only:
* New Zealand is extending DST, starting later this year.
(Thanks to Colin Sharples and many others for this info.)
Changes affecting commentary only:
* The Caprivi Strip unofficially does not observe DST, but we currently
have no further details. (Thanks to Petronella Sibeene for this.)