Fix for daylight savings issue

Adding _time2int(_getTimeValue(self)) to a unixtime assumes each day
is 24 hours long;  this is not always the case in regions that have
daylight savings time.

This change explicitly sets hours/minutes/seconds, rather than making
said assumption.
Merge branch 'bugfix/dst-issue' of https://github.com/kroo/jquery-timepicker into kroo-bugfix/dst-issue
Updated version and minified file