[PATCH 4/4] Support TZ transition times < 00:00:00.

[Ondřej Bílka]

On Wed, Sep 18, 2013 at 02:37:59PM -0700, Paul Eggert wrote:
> 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.
> ---
>  ChangeLog        |  9 +++++++++
>  manual/time.texi | 12 +++++++++++-
>  time/tzset.c     |  7 +++++--
>  3 files changed, 25 insertions(+), 3 deletions(-)
> 
These looks ok and test succeeeds, as there is currently no path that
exercise a negative data/date after 2037 it may be good idea to add
testcase.