MOM6: Merge pull request #820 from adcroft/fix-doxy-1.8.4

- Updating for dev-master-candidate-2018-07-16 PR to dev/master

- NOAA-GFDL/MOM6@82a8f79 Merge pull request #820 from adcroft/fix-doxy-1.8.4
- NOAA-GFDL/MOM6@f7be32d Fixed documentation in MOM_debugging
- NOAA-GFDL/MOM6@6478c01 Fixes for doxumentation using doxygen 1.8.4
- NOAA-GFDL/MOM6@f69cbf7 Doxygen config: only process ocean_model_MOM.F90 from coupled_driver
- NOAA-GFDL/MOM6@4061b7a Merge pull request #819 from Hallberg-NOAA/fix_dOxyGen7
- NOAA-GFDL/MOM6@d4b4edc Merge pull request #817 from Hallberg-NOAA/fix_dOxyGen6
- NOAA-GFDL/MOM6@6519f25 Merge pull request #818 from adcroft/even-more-doxy
- NOAA-GFDL/MOM6@7c4d684 Module dOxyGenization for framework code
- NOAA-GFDL/MOM6@4bd838e Module dOxyGenization for tracer code
- NOAA-GFDL/MOM6@1f1c7c8 Module dOxyGenization for EOS code
- NOAA-GFDL/MOM6@189d7d3 Corrected whitespace in circle_obcs
- NOAA-GFDL/MOM6@574af33 Adds module summary lines in src/ALE, src/user, src/parameterizations/vertical
- NOAA-GFDL/MOM6@de13a2c Module dOxyGenization for MOM_transribe_grid
- NOAA-GFDL/MOM6@0431fd7 Module dOxyGenization for MOM_dynamics_unsplit
- NOAA-GFDL/MOM6@f3b818b Module dOxyGenization for MOM_checksum_packages
- NOAA-GFDL/MOM6@c621b54 Module dOxyGenization for MOM
- NOAA-GFDL/MOM6@0da8297 Module dOxyGenization for MOM_variables & vertGrid
- NOAA-GFDL/MOM6@59bb93a Regenerated Doxygen configuration file with v1.8.15
- NOAA-GFDL/MOM6@922be4f Merge pull request #816 from adcroft/more-final-doxy
- NOAA-GFDL/MOM6@ec4fe6e Fix CPP-related doxygen errors in MOM_barotropic.F90
- NOAA-GFDL/MOM6@010f103 Shortened doxygen titles