ENH: Merge changes from main tree into VTK-5-2 branch. (cvs -q up -j1.4 -j1.5 Rendering/Testing/Tcl/TestLinearRayIntegration.tcl)
ENH: Merge changes from main tree into VTK-5-2 branch. (cvs -q up -j1.4 -j1.5 Rendering/Testing/Tcl/TestLinearRayIntegration.tcl)

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