Changed GetKernelSize to return 3 components rather than 4
Changed GetKernelSize to return 3 components rather than 4

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