Attempt to fix locating pvtk.
Attempt to fix locating pvtk.

Need to consider configuration in path on Windows.

Change-Id: Ibab14980e39c5de415c800ba1201eafa5df45201

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