Commits

Merge pull request #208 in HDFFV/hdf5 from ~DEROBINS/hdf5_der:cache_image_partial to cache_image SWMR retry changes + normalization * commit 'c12b6872ef6bff9db7edab8bbbf7f4ffabfde05c': Brought over a batch of cherry-picked changes from develop: Bring over support for retrying metadata cache entry loads, along with all the supporting metadata cache callback changes, etc. Change dlopen from RTLD_NOW to RTLD_LAZY (cherry picked from commit ae59766fc981ff64236e461cebe3f193c7fd6a51)