- fix bug reported on Dec 02, 2011 (mitgcm-devel): was not compiling   with #undef SEAICE_GROWTH_LEGACY and #undef SHORTWAVE_HEATING) - change TMIX (previously in common block) to a local var (without overlap)
- fix bug reported on Dec 02, 2011 (mitgcm-devel): was not compiling
  with #undef SEAICE_GROWTH_LEGACY and #undef SHORTWAVE_HEATING)
- change TMIX (previously in common block) to a local var (without overlap)

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