I made some more changes for VTK 6.0. Most of the changes work with VTK
5.8 and 6.0, but a few don't and those are conditionaly compiled. I
started with versions the Kathleen modified for VTK 6.0 and added
conditional compiles for code that wouldn't work with VTK 5.8.

The types of changes made were:

1) filter->SetInput(vtkDataObject);

     to

   filter->SetInputData(vtkDataObject);

 2) virtual void WriteFile(ofstream *, vtkImageData, int ext[6]);
    virtual void WriteFileHeader(ofstream *, vtkImageData *);

      to

    virtual void WriteFile(ofstream *, vtkImageData *, int ext[6], int wExt[6]);
    virtual void WriteFileHeader(ofstream *, vtkImageData *, int wExt[6]);



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@20184 18c085ea-50e0-402c-830e-de6fd14e8384