4da6f10233bade916f3e3ee5eaa47be3f1fd0119 ms-sbvar: ms_simulation: add option to save mcmc draws

================================ 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-k4BPcHxoql.log'.