Updated efele.net/tz maps

I have updated the maps of the TZ timezones presented at <http://efele.net/maps/tz>: - in sync with 2009r - antarctica is now handled (that leaves only Greenland that is not dealt with) - better processing to produce the maps, resulting in better quality - addition of terms of use (everything is CC0; i.e. whatever I had a right to is now in the public domain) I am sure there are some glitches; please let me know. Enjoy, Eric.