BUG: Safer checking for swig-mangled pointers in python.  Thanks to Scott Swarts for the patch.
BUG: Safer checking for swig-mangled pointers in python.  Thanks to Scott Swarts for the patch.

berendkleinhaneveld/VTK,sumedhasingla/VTK,candy7393/VTK,spthaolt/VTK,ashray/VTK-EVM,keithroe/vtkoptix,aashish24/VTK-old,SimVascular/VTK,johnkit/vtk-dev,spthaolt/VTK,demarle/VTK,cjh1/VTK,cjh1/VTK,sankhesh/VTK,demarle/VTK,hendradarwin/VTK,naucoin/VTKSlicerWidgets,arnaudgelas/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,cjh1/VTK,jeffbaumes/jeffbaumes-vtk,candy7393/VTK,sumedhasingla/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,candy7393/VTK,naucoin/VTKSlicerWidgets,ashray/VTK-EVM,daviddoria/PointGraphsPhase1,gram526/VTK,arnaudgelas/VTK,msmolens/VTK,mspark93/VTK,demarle/VTK,jmerkow/VTK,Wuteyan/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,cjh1/VTK,SimVascular/VTK,naucoin/VTKSlicerWidgets,biddisco/VTK,daviddoria/PointGraphsPhase1,spthaolt/VTK,johnkit/vtk-dev,sumedhasingla/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,candy7393/VTK,aashish24/VTK-old,daviddoria/PointGraphsPhase1,jmerkow/VTK,Wuteyan/VTK,mspark93/VTK,collects/VTK,msmolens/VTK,collects/VTK,SimVascular/VTK,keithroe/vtkoptix,jmerkow/VTK,arnaudgelas/VTK,biddisco/VTK,msmolens/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,hendradarwin/VTK,johnkit/vtk-dev,sankhesh/VTK,msmolens/VTK,gram526/VTK,gram526/VTK,ashray/VTK-EVM,biddisco/VTK,sankhesh/VTK,daviddoria/PointGraphsPhase1,msmolens/VTK,aashish24/VTK-old,SimVascular/VTK,hendradarwin/VTK,biddisco/VTK,keithroe/vtkoptix,aashish24/VTK-old,gram526/VTK,collects/VTK,gram526/VTK,Wuteyan/VTK,arnaudgelas/VTK,johnkit/vtk-dev,Wuteyan/VTK,candy7393/VTK,sankhesh/VTK,sumedhasingla/VTK,collects/VTK,jmerkow/VTK,cjh1/VTK,sankhesh/VTK,spthaolt/VTK,keithroe/vtkoptix,SimVascular/VTK,arnaudgelas/VTK,aashish24/VTK-old,Wuteyan/VTK,keithroe/vtkoptix,ashray/VTK-EVM,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,biddisco/VTK,gram526/VTK,sankhesh/VTK,demarle/VTK,Wuteyan/VTK,collects/VTK,gram526/VTK,spthaolt/VTK,mspark93/VTK,msmolens/VTK,ashray/VTK-EVM,jmerkow/VTK,spthaolt/VTK,hendradarwin/VTK,biddisco/VTK,candy7393/VTK,johnkit/vtk-dev,sankhesh/VTK,demarle/VTK,SimVascular/VTK,keithroe/vtkoptix,candy7393/VTK,naucoin/VTKSlicerWidgets,gram526/VTK,msmolens/VTK,demarle/VTK,sumedhasingla/VTK,SimVascular/VTK,mspark93/VTK,candy7393/VTK,sumedhasingla/VTK,SimVascular/VTK,jmerkow/VTK,ashray/VTK-EVM,ashray/VTK-EVM,hendradarwin/VTK,johnkit/vtk-dev,sankhesh/VTK,jmerkow/VTK,jeffbaumes/jeffbaumes-vtk,collects/VTK,jeffbaumes/jeffbaumes-vtk,sumedhasingla/VTK,berendkleinhaneveld/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,keithroe/vtkoptix,biddisco/VTK,berendkleinhaneveld/VTK,mspark93/VTK,spthaolt/VTK,msmolens/VTK,demarle/VTK,mspark93/VTK,cjh1/VTK,mspark93/VTK,demarle/VTK,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,mspark93/VTK,arnaudgelas/VTK,hendradarwin/VTK