Added vtkLight methods.
Added vtkLight methods.

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