Fix wrapping any CBV function without libffi; now shoudl produce an error only when CBV functions are called.  Non-variadic CBV functions should now also be DEFUN.
Fix wrapping any CBV function without libffi; now shoudl produce an error only when CBV functions are called.  Non-variadic CBV functions should now also be DEFUN.

rpav/cl-autowrap,rpav/cl-autowrap,rpav/cl-autowrap