Convert sprintf to snprintf, this time with copy-paste of nearby lengths

Charts/Core/vtkControlPointsItem.cxx

Common/System/vtkDirectory.cxx

IO/Exodus/vtkExodusIIWriter.cxx

IO/Geometry/vtkChacoReader.cxx

Interaction/Widgets/vtkAngleRepresentation.cxx

Interaction/Widgets/vtkBiDimensionalRepresentation.cxx

Interaction/Widgets/vtkDistanceRepresentation.cxx

Interaction/Widgets/vtkLineRepresentation.cxx

Interaction/Widgets/vtkResliceCursorRepresentation.cxx

Interaction/Widgets/vtkSliderRepresentation.cxx

Rendering/Annotation/vtkAxisActor.cxx

Rendering/Annotation/vtkAxisActor2D.cxx

Rendering/Annotation/vtkBarChartActor.cxx

Rendering/Annotation/vtkCubeAxesActor.cxx

Rendering/Annotation/vtkCubeAxesActor2D.cxx

Rendering/Annotation/vtkLeaderActor2D.cxx

Rendering/Annotation/vtkParallelCoordinatesActor.cxx

Rendering/Annotation/vtkPolarAxesActor.cxx

Rendering/Annotation/vtkScalarBarActor.cxx

Rendering/Annotation/vtkXYPlotActor.cxx