hdf5

Merge pull request #503 in HDFFV/hdf5 from ~BYRN/hdf5_adb:bugfix/HDFFV-10186-tbitnopaque-test to develop

* commit 'ec0935a924a84b18b29473b4fcec7c3f4e1aca76':
  HDFFV-10186 xml test also needs endianess aware files
  HDFFV-10186 - h5tools_str_append is not printf
  HDFFV-10186 braces formatting
  Fix reference file contents
  HDFFV-10186 Add endianess to bitfield and fix tests