hdf5_der

[svn-r27482] Fixes for revise_chunks daily test failures:
(1) test/swmr.c: test for H5_HAVE_FORK in test_file_lock_swmr_concur() as in test_file_lock_concur().
(2) test/cache_logging.c: (a) fix to catch proper return from the test (b) use h5_fixname() so check-vfd won't fail.