SMTK configure step does not consistently find HDF5
When the superbuild is configuring smtk, cmake fails to consistently find HDF5. A completely new build seems to work, however, rebuilding an existing build -- even after deleting the SMTK directory -- does not.
The issues seems to be in the FindHDF5_MOAB.cmake file in the thirdparty/moab/config folder. The strangeness is that when the system find_package(HDF5) call on line 14 fails, the HDF5_DIR variable gets set to $superbuild/install/share/cmake/hdf5 -- this looks like the correct directory, although it is not clear why or where that occurs. But then, on line 23 of the file, the code looks at the path ${HDF5_DIR}/share/cmake/hdf5/hdf5-config.cmake which doesn't exist. So for this code to "work", the HDF5_DIR var would need to be set to the superbuild install directory.