Improve error presentation in IPython magic (GH-3196)
Improve error presentation in IPython magic (GH-3196)

* IPython magic: hide internal traceback when compilation fails
* IPython magic: hide internal traceback when build fails

da-woods/cython,da-woods/cython,cython/cython,da-woods/cython,scoder/cython,scoder/cython,da-woods/cython,cython/cython,cython/cython,scoder/cython,cython/cython,scoder/cython