  - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F     to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
  - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
    to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)

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