29552327805c739e237b0593abe4fe2db1dd19a2 dynSeries: add scalar addition

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 200 | PASS: 198 | FAIL: 1 | XFAIL: 1 | XPASS: 0 | LIST OF FAILED TESTS: | * gsa/ls2003.mod

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 198 | PASS: 195 | FAIL: 2 | XFAIL: 1 | XPASS: 0 | LIST OF FAILED TESTS: | * gsa/ls2003.mod | * run_reporting_test_octave.m

A full log can be found on karaba in '/tmp/dynare-master-check-9SXdOVFD9m.log'.