cross-compilation for vtkHDF5
Applied patch from HDF5 Github (https://github.com/HDFGroup/hdf5/pull/3104) to remove H5detect and then make HDF5 cross-compilable (in order to use it in WASM).
Applied patch from HDF5 Github (https://github.com/HDFGroup/hdf5/pull/3104) to remove H5detect and then make HDF5 cross-compilable (in order to use it in WASM).