Merge available RM doxygen from develop to hdf5 1 12#131

Merged

lrknox merged 6 commits intoHDFGroup:hdf5_1_12from lrknox:hdf5_1_12

Nov 26, 2020

+9,796-638

Commits on Nov 23, 2020

Snapshot version 1.12 release 1-3. Update version to 1.12.1-4.
lrknox
committed

Commits on Nov 26, 2020