new option: USE_SHAP_CALC_VORTICITY (default=undef) to use SHAP_FILT_RELVORT3 instead of MOM_CALC_RELVORT3 (in pkg/mom_common)
new option: USE_SHAP_CALC_VORTICITY (default=undef) to use SHAP_FILT_RELVORT3
instead of MOM_CALC_RELVORT3 (in pkg/mom_common)

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