Computes Lin's similarity measure.

def lin_sim(goid1, goid2, godag, termcnts):
    '''
        Computes Lin's similarity measure.
    '''
    sim_r = resnik_sim(goid1, goid2, godag, termcnts)
    return lin_sim_calc(goid1, goid2, sim_r, termcnts)