COMP: Make the cast of the return value of glXGetProcAddress to vtkOpenGLExtensionManagerFunctionPointer explicit.  Hopefully, this will fix an error on Solaris 9.
COMP: Make the cast of the return value of glXGetProcAddress to
vtkOpenGLExtensionManagerFunctionPointer explicit.  Hopefully, this will
fix an error on Solaris 9.

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