[vtkusers] vtk 5.8 and hdf5 support with cpp enabled

[skific]

I'm trying to build vtk 5.8 (checkout from git tagged 5.8) in vs 2010 
with cmake 2.8.5
I had enabled the HDF5_BUILD_CPP_LIB option in gui. However, the
HDF5_INCLUDE_DIRS variable in vtkHDF5Config.cmake in 
buid/Utilities/vtkhdf5 does not hold the  
PATH_TO_VTK_SRC/Utilities/vtkhdf5/c++/src folder required for using 
hdf5's c++ classes. Consequently, the VTK_INCLUDE_DIRS variable has all 
vtkhdf5 folders, except for the c++/src folder.
Is this behaviour intentional or is it a bug?
regards,
skific