COMP:  Give better messages when Qt isn't found.        Turn VTK_USE_QVTK off when PARAVIEW_BUILD_QT_GUI is off.
COMP:  Give better messages when Qt isn't found.
       Turn VTK_USE_QVTK off when PARAVIEW_BUILD_QT_GUI is off.

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