FL 21.06.2017:

cpl.f90: add one line diag printout (nlsg > 1)
fluxmod.f90: bug fix for entropy and energy diagnostics (missing cp in stress)
oceanmod.f90: add one line diag printout (nlsg > 1)
plasim.f90: a) bug fix for GWD entropy diagnostics (- sign)
            b) small additional print out for nprint > 0
radmod.f90: 3d co2 distribution included