Warning about NIMEMB_SYM_ redefined in MOM_ice_shelf.F90

[adcroft]

We've had these warnings for a long time.

../../../../../MOM6-examples/src/MOM6/src/ice_shelf/MOM_ice_shelf.F90:142:0: warning: "NIMEMB_SYM_" redefined [enabled by default]
In file included from ../../../../../MOM6-examples/src/MOM6/config_src/dynamic/MOM_memory.h:49:0,
from ../../../../../MOM6-examples/src/MOM6/src/ice_shelf/MOM_ice_shelf.F90:134:
../../../../../MOM6-examples/src/MOM6/src/framework/MOM_memory_macros.h:84:0: note: this is the location of the previous definition
../../../../../MOM6-examples/src/MOM6/src/ice_shelf/MOM_ice_shelf.F90:143:0: warning: "NJMEMB_SYM_" redefined [enabled by default]
In file included from ../../../../../MOM6-examples/src/MOM6/config_src/dynamic/MOM_memory.h:49:0,
from ../../../../../MOM6-examples/src/MOM6/src/ice_shelf/MOM_ice_shelf.F90:134:
../../../../../MOM6-examples/src/MOM6/src/framework/MOM_memory_macros.h:85:0: note: this is the location of the previous definition

A cursory look suggests that MOM_ice_shelf.F90 should use differently named macros since they apparently could be configured differently to those in MOM_memory.h. Since I don't have a working test case we need someone who does have a test case to cleanup the code.