COMP: log2 fix. log2 not defined on windows.
COMP: log2 fix. log2 not defined on windows.

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