hdf5_der

Merge pull request #183 in HDFFV/hdf5 from ~KOZIOL/hdf5:develop_swmr_merge to develop

Merged the final library SWMR changes from revise_chunks.

* commit '15e04901a0cea65b2b0fa3ca869341a2b656bfdf':
  Bring SWMR support in to the main development branch.  (Finally!)  More tests and the tool and API wrappers will be coming in over the weekend.
  Add some Java methods that were missed earlier.
  Minor normalization cleanups.