ENH:Test if signal CreateDevice exists on the instance of QApplication, warn if not.
ENH:Test if signal CreateDevice exists on the instance of QApplication, warn if not.

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