FMS built using different CPP flags than other FV3 components

[oliverwm1]

The CPP flags used to build FMS are -Duse_LARGEFILE and -DMAXFIELDMETHODS_=500 (and possibly others defined outside the Dockerfile).

The flags used to build everything under FV3/ include -Duse_libMPI -Duse_netCDF -DSPMD -DUSE_LOG_DIAG_FIELD_INFO -Duse_LARGEFILE -DUSE_GFSL63 -DGFS_PHYS -DNO_INLINE_POST -DNEW_TAUCTMAX -DINTERNAL_FILE_NML and sometimes more depending on some other configuration settings (hydrostatic, 32bit vs 64bit, etc).

Not all of the flags used to compile FV3 exist anywhere in the FMS source code but most of them do.

In particular, the model uses a different set of physical constants if FMS is not compiled with -DGFS_PHYS.