Commits
Merge pull request #1257 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop * commit '532a8df687e6acff18453fec6b8fe22f4bc65ebe': HDFFV-10531 document option for external libs
Merge pull request #1257 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop * commit '532a8df687e6acff18453fec6b8fe22f4bc65ebe': HDFFV-10531 document option for external libs