f2b4de1d8af957e4e17867356258dbfa44c60f33 reporting: support a different shape for the axis in a graph

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 453 | PASS: 449 | FAIL: 2 | XFAIL: 2 | XPASS: 0 | LIST OF FAILED TESTS: | * ep/rbc.mod | * ep/rbcii.mod

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 451 | PASS: 447 | FAIL: 2 | XFAIL: 2 | XPASS: 0 | LIST OF FAILED TESTS: | * ep/rbc.mod | * ep/rbcii.mod

A full log can be found on karaba in '/tmp/dynare-master-check-svGSor9Y6A.log'.