Popup for dates, Holidays and Factory Calendar

F4_DATE	Displays a popup dialog to choose date
POPUP_TO_SELECT_MONTH	Display a pop-up to select a month

HOLIDAY_GET Gives holidays for a country.It has two flags Freeday(for weekends)and Holiday(for public holidays). FACTORYDATE_CONVERT_TO_DATE returns the calendar date for the factory date and the factory calendar passed DATE_CONVERT_TO_FACTORYDATE returns the factory date for the date and factory calendar passed