STYLE: Added Sandia copyright to infovis classes.

Common/vtkVariant.cxx

Common/vtkVariant.h

Common/vtkVariantArray.cxx

Common/vtkVariantArray.h

Filtering/vtkAbstractGraph.cxx

Filtering/vtkAbstractGraph.h

Filtering/vtkAbstractGraphAlgorithm.cxx

Filtering/vtkAbstractGraphAlgorithm.h

Filtering/vtkGraph.cxx

Filtering/vtkGraph.h

Filtering/vtkGraphAlgorithm.cxx

Filtering/vtkGraphAlgorithm.h

Filtering/vtkGraphDFSIterator.cxx

Filtering/vtkGraphDFSIterator.h

Filtering/vtkGraphIdList.cxx

Filtering/vtkGraphIdList.h

Filtering/vtkTable.cxx

Filtering/vtkTable.h

Filtering/vtkTree.cxx

Filtering/vtkTree.h