MOM6: Merged multiple pull requests 🎪

- NOAA-GFDL/MOM6@6b4a320 Merge branch 'nicjhan-62-z-remapping-uv-grids' into dev/master
- NOAA-GFDL/MOM6@d0e99df Don't build diagnostic Z remapping grids if grid definition param not provided. NOAA-GFDL#62
- NOAA-GFDL/MOM6@604681e Fix dummy argument intent. Does not compile on Gaea. NOAA-GFDL#62
- NOAA-GFDL/MOM6@e35830a Merge branch 'angus-g-diag-eta-preale' into dev/master
- NOAA-GFDL/MOM6@e39aa4b Merge branch 'diag-eta-preale' of https://github.com/angus-g/MOM6 into angus-g-diag-eta-preale
- NOAA-GFDL/MOM6@b10de2d Merge branch 'nicjhan-189-H_to_m' into dev/master
- NOAA-GFDL/MOM6@6289604 Merge branch '189-H_to_m' of https://github.com/nicjhan/MOM6 into nicjhan-189-H_to_m
- NOAA-GFDL/MOM6@2e51382 Fixed G%gridLoaTn and G%girdLonB in "spherical" model
- NOAA-GFDL/MOM6@8008eea Move calls to update grid for z remapping of diagnostics out of continuity(). It is not necessary to pass the diag mediator structure into calls to continuity(). NOAA-GFDL#62
- NOAA-GFDL/MOM6@0b08d8c Do m_to_H conversion within ALE regridding. ALE_main() now handles arbitrary H units - no need to convert to m before calling it. NOAA-GFDL#189
- NOAA-GFDL/MOM6@5923919 Changes to meet review comments NOAA-GFDL#189:   - show ranks when doing vector multiplies,   - replace G%Angstrom_z with G%Angstrom in various places,   - fix units of eta_bt,   - improve comments
- NOAA-GFDL/MOM6@d701204 Unit conversions to support H vertical unit independant of m. No results change. Closes NOAA-GFDL#189
- NOAA-GFDL/MOM6@bf06b59 Remove unused variables. NOAA-GFDL#189
- NOAA-GFDL/MOM6@19bed14 Add additional checksums, do H unit conversion on checksum arrays. NOAA-GFDL#189
- NOAA-GFDL/MOM6@032a76d Comment and whitespace fixes. NOAA-GFDL#189
- NOAA-GFDL/MOM6@f629970 Add e_preale diagnostic
- No answer changes.