
COMP: Fix HP-UX build.
BUG:  Need a show on Windows.
      Check for NULL VTK_DATA_ROOT and don't crash.

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