Following minor changes in pkg/ggl90:  o GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
Following minor changes in pkg/ggl90:
 o GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV

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