test_parse_date

[yarikoptic]

as originally discussed in #216 and now moved outside

I am a bit uncertain if the test rests on correct assumptions:

 99             rfc = ("Thu, 07 Apr 2005 22:13:11 +0000", 0)
100             iso = ("2005-04-07T22:13:11 -0200", 7200)
101             iso2 = ("2005-04-07 22:13:11 +0400", -14400)
102             iso3 = ("2005.04.07 22:13:11 -0000", 0)
103             alt = ("04/07/2005 22:13:11", 0)
104             alt2 = ("07.04.2005 22:13:11", 0)
105             veri_time = 1112904791      # the time this represents
(Pdb) 
106             for date, offset in (rfc, iso, iso2, iso3, alt, alt2):
107  ->             assert_rval(parse_date(date), veri_time, offset)

while date says it was 20 not 22 hours at UTC

$> date -u --date='@1112904791' 
Thu Apr  7 20:13:11 UTC 2005

changing to 1112911991 (prev + 2 hours) doesn't resolve the problem though