COMP: vtkVersion.h is backwards compatible with VTK5 & VTK6

s/vtkVersionMacro.h/vtkVersion.h/g
Merge pull request #22 from BRAINSia/FixVTK6VTK5BuildErrors

Fix vtk6 vtk5 build errors
COMP: Fixe Eigen file name case sensitive failure.
Merge pull request #23 from BRAINSia/FixEigen

COMP: Fixe Eigen file name case sensitive failure.