Solves the Clam bioenergetic balance (alternative version) with a 4th order Runge Kutta method
ClamF_pop_RKsolver(Param, times, IC, Tint, Chlint)
a list containing the clam weights, temperature limitation functions and metabolic rates
a vector containing model parameters
integration extremes and integration timestep
initial condition on weight
the interpolated water temperature time series
the interpolated chlorophyll a time series