COMP: removed obsolete VS6 support
COMP: removed obsolete VS6 support

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