Allow for reading files >2GB with vtkImageReader on windows
Fix vtkImageReader/vtkImageReader2 limitation discussed in:
https://discourse.vtk.org/t/reading-raw-data-using-memcpy/7215
Fix vtkImageReader/vtkImageReader2 limitation discussed in:
https://discourse.vtk.org/t/reading-raw-data-using-memcpy/7215