hadley/lubridate — pull request #203 by ijlyttle (2013-09-16 13:39:29+00:00)
Title: Follow-on to pull 165: olson_time_zones()

Instead of worrying about operating systems, I propose to worry only about the existence of files.

I have the locations for Windows and Ubuntu - if there are other locations, they can be added to `dir_share`.

Some tests included.