Re-commit the LightKit demo program from vtk 3.2 (after a cleanup and adding new support for back light controls).
Re-commit the LightKit demo program from vtk 3.2 (after a cleanup and
adding new support for back light controls).

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