Modify the QLocale date formatter to be consistent with the QDateTime
date formatter and able to replace the QDateTime formatter in a
subsequent change.
Fix the treatment of negative years.
The internal QLocale::timeZone() has been replaced by the
QDateTime::timeZoneAbbreviation() to ensure the correct tz for the
date/time is used rather than always the current system default.
Change-Id: I2ef26700856e2e69b979069226aa504ecbb50071
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>