COMP: Pass all headers to the vtkWrapHierarchy tool.
COMP: Pass all headers to the vtkWrapHierarchy tool.

In VTK 5.8 through 5.10, all the header files were passed to
vtkWrapHierarchy, not just the wrapped ones.  But in VTK 6 the
IGNORE_WRAP_EXCLUDE variable was inadertently removed from
vtkWrapHierarchy.cmake (probably to fix a temporary build issue),
causing only wrapped files to be passed to vtkWrapHierarchy.

This patch returns to the old behavior.  This fixes a VTK 6
wrapper issue that was caused because vtkTextureUnitManager
was missing from vtkRenderingOpenGLHierarchy.txt.

Change-Id: I98d720784fd83e51b9ebb73cc3d744d05151188f

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