hdf5_ep

Merge pull request #2326 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop

* commit 'c5e2d975734d6e7a88fb48b76ec7e11d0a7763de':
  Small fixes for tools and skip autotools tests for no filter
  Correctly manage warnings for new tests
  Ext libs ZLIB and SZIP warnings are separate concerns