/* $DOC$
   $NAME$
      ft_Dec2Bin()
   $CATEGORY$
      Conversion
   $ONELINER$
      Convert decimal to binary
   $SYNTAX$
      ft_Dec2Bin( <nNum> ) -> cBinaryNumber
   $ARGUMENTS$
      <nNum> is the numeric expression to be converted.
   $RETURNS$
      A character string representing <nNum> in binary format.
   $DESCRIPTION$
      This function can be used in conjunction with any bit-wise
      operations.
   $EXAMPLES$
      ? ft_Dec2Bin( 255 )         // "11111111"
      ? ft_Dec2Bin( 2 )           // "00000010"
   $END$
 */