Further changes to vtkPicker to better support vtkImageActor.  Note that vtkCellPicker and vtkPointPicker don't provide cell or point information for vtkImageActor yet.
Further changes to vtkPicker to better support vtkImageActor.  Note that
vtkCellPicker and vtkPointPicker don't provide cell or point information
for vtkImageActor yet.

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