Add find_package(HDF5 ...) for static builds.
Add find_package(HDF5 ...) for static builds.

When building statically the HDF5 targets are needed.

Change-Id: I4f966fa41a682e76fff266f5286b74debdcd0e10

ghutchis/avogadroapp,wadejong/avogadroapp,ghutchis/avogadroapp,ghutchis/avogadroapp,OpenChemistry/avogadroapp,OpenChemistry/avogadroapp,wadejong/avogadroapp,ghutchis/avogadroapp,OpenChemistry/avogadroapp,wadejong/avogadroapp,OpenChemistry/avogadroapp