ENH: Merge changes from main tree into VTK-5-2 branch. (cvs -q up -j1.15 -j1.16 IO/vtkPNGReader.h)
ENH: Merge changes from main tree into VTK-5-2 branch. (cvs -q up -j1.15 -j1.16 IO/vtkPNGReader.h)

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