Find out if a date is in a leap year
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 Syntax

        GT_LeapYear( dDate )

 Arguments:

      dDate - Date to consider - defaults to current date

 Returns:

      .T. if the date is in a leap year
      .F. otherwise

 Description:

      Sees if the date that is one day after Feb 28th in the given year
      is Feb 29th.  If it is, then we have a leap year.

 Examples:



 Source: LEAPYEAR.PRG

 Author:  Martin Colloby