Paul Eggert 0748546f66 Support TZ transition times < 00:00:00.
This is needed for version-3 tz-format files; it supports time
stamps past 2037 for America/Godthab (the only entry in the tz
database for which this change is relevant).
* manual/time.texi (TZ Variable): Document transition times
from -167:59:59 through -00:00:01.
* time/tzset.c (tz_rule): Time of day is now signed.
(__tzset_parse_tz): Parse negative time of day.
2013-12-17 10:18:10 -08:00
..
2013-02-07 14:44:18 -08:00
2012-04-02 22:31:32 +02:00
2013-02-17 16:34:04 +01:00