01fc6d5225dbdf90f2c479018f514e0e9c55ff77 make_y.m: replaced max_lead and max_lag by 1, as the model is now always transformed with leads and lags on one period only. Close issue #613

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 423 | PASS: 421 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 421 | PASS: 419 | FAIL: 0 | XFAIL: 2 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-4.4-check-DvwXdpi2yl.log'.