Fix compilation errors and warnings
Fix compilation errors and warnings

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