o add cos & sin of grid-direction orientation angle (curvilinear grid only,    for output and interpolation of input fields onto model grid) o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).    Affects results of exp. rotating_tank ; update output.txt.
o add cos & sin of grid-direction orientation angle (curvilinear grid only,
   for output and interpolation of input fields onto model grid)
o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
   Affects results of exp. rotating_tank ; update output.txt.

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