make test runner exit with non-0 return status on exceptions (this shadowed an actual bug in this branch)
make test runner exit with non-0 return status on exceptions (this shadowed an actual bug in this branch)

fabianrost84/cython,fabianrost84/cython,scoder/cython,ChristopherHogan/cython,c-blake/cython,da-woods/cython,cython/cython,da-woods/cython,c-blake/cython,scoder/cython,scoder/cython,fabianrost84/cython,ChristopherHogan/cython,fabianrost84/cython,cython/cython,cython/cython,c-blake/cython,da-woods/cython,c-blake/cython,ChristopherHogan/cython,da-woods/cython,scoder/cython,fabianrost84/cython,c-blake/cython,cython/cython