get_by_week_no_array
Description:
Gets the by_week_no array from Recurrence.
The array size is I_CAL_BY_WEEKNO_SIZE.
Parameters:
| this | The Recurrence | 
Returns:
| The by_week_no of Recurrence. | 
Gets the by_week_no array from Recurrence.
The array size is I_CAL_BY_WEEKNO_SIZE.
| this | The Recurrence | 
| The by_week_no of Recurrence. |