Merge pull request #2828 in HDFFV/hdf5 from ~BYRN/hdf5_adb:hdf5_1_10 to hdf5_1_10
* commit 'fc3129a92e29b50dac3bd3d3777df13d970a017a':
Revert H5_VERS_SUBRELEASE check
Add special case when H5_VERS_SUBRELEASE is 0
Condition if (H5_VERS_SUBRELEASE) is incorrectly false when H5_VERS_SUBRELEASE is 0, a valid value for H5_VERS_SUBRELEASE. Updated to if (${H5_VERS_SUBRELEASE} STREQUAL "") with corresponding reversal of action statements to avoid NOT.
Add hypen to subrelease regex
Add ifdef blocks to S3/HDFS test
