document recent change to pkg seaice, in particular:   - unify iteration parameters for implicit solvers (JFNK and Picard)     SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS     SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER     SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner     SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner     SEAICEnonLinTol     replaces JFNKgamma_nonlin   - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN   - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and     use with SEAICEuseKrylov   - pkg/seaice/seaice_lsr.F     fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only     relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have     an effect.
document recent change to pkg seaice, in particular:
  - unify iteration parameters for implicit solvers (JFNK and Picard)
    SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
    SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
    SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
    SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
    SEAICEnonLinTol     replaces JFNKgamma_nonlin
  - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
  - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
    use with SEAICEuseKrylov
  - pkg/seaice/seaice_lsr.F
    fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
    relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
    an effect.

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