PERF: a better fudge factor in the Lin-Bairstow solver (after extensive       tests have revealed this one is indeed better). STYLE: improved some comments, made some code more concise.
PERF: a better fudge factor in the Lin-Bairstow solver (after extensive
      tests have revealed this one is indeed better).
STYLE: improved some comments, made some code more concise.

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