More progress. Everything compiles now

Charts/Testing/Cxx/TestHistogram2D.cxx

Charts/vtkColorLegend.cxx

Charts/vtkColorTransferFunctionItem.cxx

Charts/vtkLookupTableItem.cxx

Charts/vtkPiecewiseFunctionItem.cxx

Charts/vtkPlotHistogram2D.cxx

Charts/vtkPlotPoints.cxx

Filtering/Testing/Cxx/TestPointLocators.cxx

Filtering/vtkAlgorithm.cxx

Filtering/vtkAlgorithm.h

Filtering/vtkDataObject.cxx

Filtering/vtkDataObject.h

Filtering/vtkStreamingDemandDrivenPipeline.cxx

Geovis/vtkGeoAlignedImageSource.cxx

Geovis/vtkGeoImageNode.cxx

Graphics/Testing/Cxx/BoxClipTetrahedra.cxx

Graphics/Testing/Cxx/BoxClipTriangulate.cxx

Graphics/Testing/Cxx/TestBareScalarsToColors.cxx

Graphics/Testing/Cxx/TestExtraction.cxx

Graphics/Testing/Cxx/TestMapVectorsAsRGBColors.cxx