Add ProcessIds data array attribute
- vtkDataSetAttributes: Add processIds data array
- vtkGenerateProcessIds: Set processIds attribute
- Add a filter setting ProcessIds array for both PointData and CellData.
- Deprecate vtkProcessIdScalars that was doing the same thing in Scalars array.
- Create always a vtkIdTypeArray, named "PointProcessIds" for PointData, and "CellProcessIds" for CellData.
- vtkDataSetAttributes: Document ProcessIds array
Edited by Charly Bollinger