message: Fix: error in the dimension used for computeMinMax
  Instead of using the current dimension for which we just got a big span,
  we were computing Min and Max for the previous dimension stored in cutfeat
  (and using 0 instead of the dimension indice for the very first dimension
  with "span > (1-eps)max_span")
diff: @@ -461,7 +461,7 @@ private:
  DistanceType span = bbox[i].high-bbox[i].low;
  if (span>(DistanceType)((1-EPS)*max_span)) {
  ElementType min_elem, max_elem;
  - computeMinMax(ind, count, cutfeat, min_elem, max_elem);
  + computeMinMax(ind, count, (int)i, min_elem, max_elem);
  DistanceType spread = (DistanceType)(max_elem-min_elem);
  if (spread>max_spread) {
  cutfeat = (int)i;
  