document changes in OpenAD verification experiments: ALLOW_AUTODIFF_TAMC undef  in OpenAD test ; use pkg specific option file instead of ECCO_CPPOPTIONS.h
document changes in OpenAD verification experiments: ALLOW_AUTODIFF_TAMC undef
 in OpenAD test ; use pkg specific option file instead of ECCO_CPPOPTIONS.h

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