FIX: minor change to support 64bit architectures.  vtkOpenGLImageMapperRenderShort() relied on      overflowing a long.  This did not work on an SGI 64 bit platform.  Changed to overflow an int.
FIX: minor change to support 64bit architectures.  vtkOpenGLImageMapperRenderShort() relied on
     overflowing a long.  This did not work on an SGI 64 bit platform.  Changed to overflow an int.

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