(http://www.twinsun.com/tz/tz-link.htm) to provide daylight savings
aware transformations between times in different time zones. The
tz database is compiled into Ruby classes which are packaged in the
release. No external zoneinfo files are required at runtime.
WWW: http://tzinfo.rubyforge.org/
PR: ports/98771
Submitted by: Rui Lopes <rgl@ruilopes.com>