ENH: Fix signature to allow string literals
ENH: Fix signature to allow string literals

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