ENH: Fix obsolete comments, round alpha when converting from float.
ENH: Fix obsolete comments, round alpha when converting from float.

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