[phobos] std.datetime unittest

[Jonathan M Davis]

Actually, another possibility (besides the time zone file being wrong) would be 
if FreeBSD9's version of glibc had a bug in it which caused it to read the 
time zone file incorrectly. Assuming that you're in an English-speaking locale, 
if you uncomment lines 27,647 and 27,648 and those tests pass, then the time 
zone file is fine (or at least not wrong enough to give PPT as the current 
abbreviation for daylight savings time), and it's glibc which is broken. I 
don't know how likely it is that such a bug would creep into glibc though, 
since I wouldn't think that that code would need to be changed very often.

- Jonathan M Davis