adae298d9546a6255f1a6ec33557286fb8bec51e Improvements to smoother2histval.

================================ DYNARE MAKE CHECK MATLAB RESULTS ================================ | TOTAL: 440 | PASS: 438 | FAIL: 0 | XFAIL: 2 | XPASS: 0

================================ DYNARE MAKE CHECK OCTAVE RESULTS ================================ | TOTAL: 438 | PASS: 436 | FAIL: 0 | XFAIL: 2 | XPASS: 0

A full log can be found on karaba in '/tmp/dynare-master-check-jglcww5DYP.log'.