Adding methods in ht for new io xml
- (1) Update comments to vtkHyperTree
- (2) Del FindChildParameters method to vtkHyperTree (no longer used !)
- (3) Add InitializeForReader and GetByLevelForWriter publics methods to vtkHyperTree
- (4) Declares the body of SetGlobalIndexStart as virtual pure in order to add an assert depending on the implementation of vtk(Compact)HyperTree, or future (in cxx)
- (5) Postponement of a test done in the cursors (vtkHTG*Entry.cxx) at the hypertree (IsLeaf)
Do: check
I retent having limited the comments of the commits.
I will close the former version of the merge preparing migration of the new io xml htg (!5825 (closed))