COMP: Avoid 64-to-32-bit integer conversion warning
COMP: Avoid 64-to-32-bit integer conversion warning

In SharedForward we are only dealing with command-line-length strings so we
need not worry about integer overflow.

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