replaced #include <stdlib.h> with <cstdlib>

The former is more C, the latter is more C++.

Change-Id: Id70453243c3d1b3e9cf85aacce5a167da19ffec6

CMake/vtkTestSocklenT.cxx

 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #if !defined(_WIN32) || defined(__CYGWIN__)
 # include <sys/types.h>
 # include <sys/socket.h>

CMake/vtkTestSyncBuiltins.cxx

 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 
 int main()
 {

Common/Math/vtkMatrix3x3.cxx

@@ -16,7 +16,7 @@
 #include "vtkMath.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <math.h>
 
 vtkStandardNewMacro(vtkMatrix3x3);

Common/Math/vtkMatrix4x4.cxx

@@ -16,7 +16,7 @@
 #include "vtkMath.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <math.h>
 
 vtkStandardNewMacro(vtkMatrix4x4);

Common/System/vtkDirectory.cxx

@@ -81,7 +81,7 @@ void vtkDirectory::PrintSelf(ostream& os, vtkIndent indent)
 #include <direct.h>
 #include <fcntl.h>
 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string.h>
 #include <sys/types.h>
 

Common/Transforms/vtkCylindricalTransform.cxx

@@ -16,7 +16,7 @@
 #include "vtkObjectFactory.h"
 #include "vtkMath.h"
 #include <cmath>
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkCylindricalTransform);
 

Common/Transforms/vtkPerspectiveTransform.cxx

@@ -16,7 +16,7 @@
 #include "vtkMath.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkPerspectiveTransform);
 

Common/Transforms/vtkSphericalTransform.cxx

@@ -16,7 +16,7 @@
 #include "vtkObjectFactory.h"
 #include "vtkMath.h"
 #include <cmath>
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkSphericalTransform);
 

Common/Transforms/vtkTransform.cxx

@@ -16,7 +16,7 @@
 #include "vtkMath.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkTransform);
 

Common/Transforms/vtkTransform2D.cxx

@@ -17,7 +17,7 @@
 #include "vtkMath.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkTransform2D);
 

Filters/Core/vtkMaskPoints.cxx

@@ -23,7 +23,7 @@
 #include "vtkPointData.h"
 #include "vtkPoints.h"
 #include "vtkPolyData.h"
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkMaskPoints);
 

Filters/General/vtkMergeCells.cxx

@@ -36,7 +36,7 @@
 #include "vtkDataArray.h"
 #include "vtkMergePoints.h"
 #include "vtkKdTree.h"
-#include <stdlib.h>
+#include <cstdlib>
 #include <map>
 #include <algorithm>
 

Filters/Hybrid/vtkDSPFilterDefinition.cxx

@@ -21,7 +21,7 @@
 #include "vtkDSPFilterDefinition.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <map>
 #include <algorithm>
 #include <vector>

Filters/Matlab/vtkMatlabEngineFilter.cxx

@@ -38,7 +38,7 @@
 #include "vtkDoubleArray.h"
 #include "vtkTable.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <string>
 #include <vector>
 #include <vtksys/ios/sstream>

Filters/Matlab/vtkMatlabEngineInterface.cxx

@@ -26,7 +26,7 @@
 #include "vtkArray.h"
 #include "engine.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <string>
 #include <vtksys/ios/sstream>
 #include <sys/stat.h>

Filters/StatisticsGnuR/vtkRCalculatorFilter.cxx

@@ -41,7 +41,7 @@
 #include "vtkMultiPieceDataSet.h"
 #include "vtkStringArray.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <string>
 #include <vector>
 #include <vtksys/ios/sstream>

IO/Exodus/vtkExodusIIReader.cxx

@@ -60,7 +60,7 @@
 
 #include "vtk_exodusII.h"
 #include <stdio.h>
-#include <stdlib.h> /* for free() */
+#include <cstdlib> /* for free() */
 #include <string.h> /* for memset() */
 #include <ctype.h> /* for toupper(), isgraph() */
 #include <math.h> /* for cos() */

IO/MINC/vtkMINCImageAttributes.cxx

@@ -64,7 +64,7 @@ POSSIBILITY OF SUCH DAMAGES.
 #include "vtkMINC.h"
 #include "vtk_netcdf.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <ctype.h>
 #include <float.h>
 #include <string>

IO/MINC/vtkMINCImageReader.cxx

@@ -70,7 +70,7 @@ POSSIBILITY OF SUCH DAMAGES.
 #include "vtkMINC.h"
 #include "vtk_netcdf.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <ctype.h>
 #include <float.h>
 #include <string>

IO/MINC/vtkMINCImageWriter.cxx

@@ -80,7 +80,7 @@ POSSIBILITY OF SUCH DAMAGES.
 #include <unistd.h>
 #endif
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <float.h>
 #include <time.h>
 #include <string>

Interaction/Widgets/Testing/Cxx/vtkAngleRepresentation2DTest1.cxx

 #include "vtkAngleRepresentation2D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkAngleRepresentation3DTest1.cxx

 #include "vtkAngleRepresentation3D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkAngleWidgetTest1.cxx

@@ -2,7 +2,7 @@
 #include "vtkAngleRepresentation2D.h"
 #include "vtkAngleRepresentation3D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkBalloonRepresentationTest1.cxx

 #include "vtkBalloonRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "vtkImageData.h"

Interaction/Widgets/Testing/Cxx/vtkBalloonWidgetTest1.cxx

@@ -7,7 +7,7 @@
 #include "vtkImageData.h"
 #include "vtkStdString.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkBiDimensionalRepresentation2DTest1.cxx

 #include "vtkBiDimensionalRepresentation2D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "vtkImageData.h"

Interaction/Widgets/Testing/Cxx/vtkBiDimensionalWidgetTest1.cxx

 #include "vtkBiDimensionalWidget.h"
 #include "vtkBiDimensionalRepresentation2D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkBorderWidgetTest1.cxx

 #include "vtkBorderWidget.h"
 #include "vtkBorderRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkCaptionRepresentationTest1.cxx

 #include "vtkCaptionRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "vtkImageData.h"

Interaction/Widgets/Testing/Cxx/vtkCaptionWidgetTest1.cxx

@@ -2,7 +2,7 @@
 #include "vtkCaptionRepresentation.h"
 #include "vtkCaptionActor2D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkConstrainedPointHandleRepresentationTest1.cxx

 #include "vtkConstrainedPointHandleRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkHoverWidgetTest1.cxx

 #include "vtkHoverWidget.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkImplicitPlaneRepresentationTest1.cxx

 #include "vtkImplicitPlaneRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkImplicitPlaneWidget2Test1.cxx

 #include "vtkImplicitPlaneWidget2.h"
 #include "vtkImplicitPlaneRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkLineRepresentationTest1.cxx

 #include "vtkLineRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkLineWidget2Test1.cxx

 #include "vtkLineWidget2.h"
 #include "vtkLineRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkOrientedPolygonalHandleRepresentation3DTest1.cxx

 #include "vtkOrientedPolygonalHandleRepresentation3D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkPointHandleRepresentation2DTest1.cxx

 #include "vtkPointHandleRepresentation2D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkPointHandleRepresentation3DTest1.cxx

 #include "vtkPointHandleRepresentation3D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkPolygonalHandleRepresentation3DTest1.cxx

 #include "vtkPolygonalHandleRepresentation3D.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkSeedRepresentationTest1.cxx

 #include "vtkSeedRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "vtkImageData.h"

Interaction/Widgets/Testing/Cxx/vtkSeedWidgetTest1.cxx

@@ -2,7 +2,7 @@
 #include "vtkSeedRepresentation.h"
 #include "vtkHandleWidget.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkSphereHandleRepresentationTest1.cxx

 #include "vtkSphereHandleRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkSplineRepresentationTest1.cxx

 #include "vtkSplineRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkSplineWidget2Test1.cxx

 #include "vtkSplineWidget2.h"
 #include "vtkSplineRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Interaction/Widgets/Testing/Cxx/vtkTextRepresentationTest1.cxx

 #include "vtkTextRepresentation.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "vtkImageData.h"

Interaction/Widgets/Testing/Cxx/vtkTextWidgetTest1.cxx

@@ -2,7 +2,7 @@
 #include "vtkTextRepresentation.h"
 #include "vtkTextActor.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <iostream>
 
 #include "WidgetTestingMacros.h"

Rendering/Core/vtkProperty.cxx

@@ -22,7 +22,7 @@
 #include "vtkStdString.h"
 #include "vtkTexture.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <vtksys/ios/sstream>
 
 #include <map>

Rendering/Core/vtkRendererCollection.cxx

@@ -16,7 +16,7 @@
 #include "vtkRenderWindow.h"
 #include "vtkObjectFactory.h"
 
-#include <stdlib.h>
+#include <cstdlib>
 
 vtkStandardNewMacro(vtkRendererCollection);
 

Rendering/Label/vtkLabelHierarchy.cxx

@@ -48,7 +48,7 @@
 #include <vector>
 #include <map>
 
-#include <stdlib.h>
+#include <cstdlib>
 
 // WORKAROUND:
 //

Rendering/OpenGL/vtkCarbonRenderWindowInteractor.cxx

@@ -13,7 +13,7 @@
 
 =========================================================================*/
 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string.h>
 #include <math.h>
 

Rendering/OpenGL/vtkWin32RenderWindowInteractor.cxx

@@ -13,7 +13,7 @@
 
 =========================================================================*/
 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string.h>
 #include <math.h>
 

Rendering/OpenGL/vtkXRenderWindowInteractor.cxx

@@ -13,7 +13,7 @@
 
 =========================================================================*/
 #include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string.h>
 
 // We have to define XTSTRINGDEFINES (used in X11/StringDefs.h and X11/Shell.h)

Rendering/Tk/vtkTkImageViewerWidget.cxx

@@ -32,7 +32,7 @@
 #endif
 #endif
 
-#include <stdlib.h>
+#include <cstdlib>
 
 #define VTK_ALL_EVENTS_MASK \
     KeyPressMask|KeyReleaseMask|ButtonPressMask|ButtonReleaseMask|      \

Rendering/Tk/vtkTkRenderWidget.cxx

@@ -42,7 +42,7 @@
 #endif
 #endif
 
-#include <stdlib.h>
+#include <cstdlib>
 
 // for uintptr_t
 #ifdef _MSC_VER

Rendering/VolumeOpenGL/vtkOpenGLGPUVolumeRayCastMapper.cxx

@@ -67,7 +67,7 @@
 #include "vtkImageResample.h"
 
 #include <sstream>
-#include <stdlib.h> // qsort()
+#include <cstdlib> // qsort()
 
 #include "vtkDataSetTriangleFilter.h"