- to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around   optionally exchanged fields;
- to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
  optionally exchanged fields;

altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h