Make the scripts executable.

src/Python/VisualizationAlgorithms/BluntStreamlines.py

src/Python/VisualizationAlgorithms/CarotidFlow.py

src/Python/VisualizationAlgorithms/CarotidFlowGlyphs.py

src/Python/VisualizationAlgorithms/ClipSphereCylinder.py

src/Python/VisualizationAlgorithms/CombustorIsosurface.py

src/Python/VisualizationAlgorithms/ContourQuadric.py

src/Python/VisualizationAlgorithms/CreateBFont.py

src/Python/VisualizationAlgorithms/CutStructuredGrid.py

src/Python/VisualizationAlgorithms/CutWithScalars.py

src/Python/VisualizationAlgorithms/DecimateFran.py

src/Python/VisualizationAlgorithms/DecimateHawaii.py

src/Python/VisualizationAlgorithms/DisplacementPlot.py

src/Python/VisualizationAlgorithms/ExponentialCosine.py

src/Python/VisualizationAlgorithms/ExtractData.py

src/Python/VisualizationAlgorithms/HeadBone.py

src/Python/VisualizationAlgorithms/HeadSlice.py

src/Python/VisualizationAlgorithms/Hello.py

src/Python/VisualizationAlgorithms/HyperStreamline.py

src/Python/VisualizationAlgorithms/IceCream.py

src/Python/VisualizationAlgorithms/IronIsoSurface.py