Commits
Merge pull request #212 in HDFFV/hdf5 from ~KOZIOL/hdf5:develop_swmr_merge_06 to develop * commit 'eefddf281366e8327dd7397db4a2f2e7edabcf17': Bring new/updated tests from revise+chunks branch: flush1/flush2 update and flushrefresh test. (Also refactor of message send / wait code)