go back to cvs version 1.7 (delete alternative cost calculation; was  not used and not as precise; and global_sum is going to be fixed soon)
go back to cvs version 1.7 (delete alternative cost calculation; was
 not used and not as precise; and global_sum is going to be fixed soon)

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