documentation for   - replacement of verification/seaice_itd   - change of some defaults of ridging parameters in seaice_readparms.F
documentation for
  - replacement of verification/seaice_itd
  - change of some defaults of ridging parameters in seaice_readparms.F

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