Some additional R scripts

Let's see -- I've uploaded R scripts com86a and com87a, concerning cigarettes and lung cancer, Nils Exercises 22-23; com88b, sicut cervus desiderat ad fontes aqarum, deer in forest, exam stk 4020 2004 no. 3; and com 90b, empirical Bayes for binomials, exam stk 4020 2004 no. 4. Send me a mail if something here isn't properly uploaded.