[tz] leap seconds (srsly)

In a couple of months, a decision is going to be made about possibly ceasing leap seconds in UTC. If that happens, the tz database is going to be thrown into a world of hurt, as "UTC = GMT" gradually ceases to be a viable approximation. Here are the slides from a talk presented a couple of months ago that provides a useful primer on how the decision would interact with civil and legal time: http://www.cacr.caltech.edu/futureofutc/program/presentations/AAS_11-662_Sea... All the presentations from the conference where that was presented, discussing mary aspects of the decision, can be found here: http://www.cacr.caltech.edu/futureofutc/program/ (Information forwarded from the leapsecs mailing list.) -zefram