Existing VIC RASM workflow finalize

At the end of the simulation, the coupler call lnd_final_mct() once. As part of this call, the following calls are made to functions that directly affect VIC:

• main/lnd_comp_mct.F90:lnd_final_mct()

  This routine is empty and does nothing in its current form. However, since it is expected it should be maintained. We could free memory in VIC here, but since that is freed when the model finishes anyway, this is not a hight priority.