$FUNCNAME$
   FT_LDAY()
$CATEGORY$
   Date/Time
$ONELINER$
   Return last day of the month
$SYNTAX$
   FT_LDAY( [ <dDateToChk> ] ) --> dLastDay
$ARGUMENTS$
   <dDateToChk> is a date within a month for which you want to find
   the last date of that month.  If not passed or is an incorrect
   type, defaults to current system date.
$RETURNS$
   A Clipper date value representing the last date of the month.
$DESCRIPTION$
   This function will return the last day of the month of the date
   passed, or the last day of the current month if no argument is
   supplied.
$EXAMPLES$
   dDate := CTOD( "09/15/90" )
   ? FT_LDAY( dDate )             // 09/30/90
   ? FT_LDAY()                    // 03/31/91  (current month)
$SEEALSO$
   FT_FDAY()
$Author: itk $
   Mike Schinkel
$end$
