0cdfe4d6c7d773059e6346bc75f80c5ae179267d Added new routines for computing gradients (options 13 and 15).

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 205 | PASS: 204 | FAIL: 0 | XFAIL: 1 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 203 | PASS: 202 | FAIL: 0 | XFAIL: 1 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-cP91TeNCIf.log'.