ENH: Check for the cmake variable, VTK_DATA_ROOT, as well as the environment variable when determining paths for imported test data.
ENH: Check for the cmake variable, VTK_DATA_ROOT, as well as the environment variable when determining paths for imported test data.

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