Commits
Merge pull request #153 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:hdf5_1_8_18 to hdf5_1_8_18 * commit '69ed993684e3de246f59b0db7f8e3bc6244bfcb2': Update URLs in RELEASE.txt. Set version and commit release script changes for 1.8.18 release. Update HDF5 document URLs in RELEASE.txt.