05-12-02 New option final state variable

Introduced a new method to assign parameter table values to represent final state variable values from previous run.

Also introduced two switches to allow for setting initial conditions as Carbon storage instead of N storage and CN ratios. The new switches are Initial Carbon Conditions and Initial Plant Conditions in the soil organic and plant growth section. New values of parameters will re assigned in respectively dialog menus by pressing a new button: Initial State Variables.        PEJ