BOOL true if the conversion succeeded, false otherwise
Comments:
- The caller is responsible for freeing any memory associated with the copy if the conversion is a success; FreeXOperT can be used, or it may be done by hand.
- If the conversion fails, any memory the method needed to malloc up until the point of failure in the conversion will be freed by the method itself during cleanup.
XLOper12ToXLOper()
Purpose: Conversion routine used to convert from the new XLOPER12 to the old XLOPER.