ENH: clear up cout of nulls
ENH: clear up cout of nulls

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