Enable Python 3.4 on Travis-CI builds.
Alternate approach for Numba_recreate_record that doesn't need #ifdef's
(and may also be lighter at runtime).
An even better solution: call the Numpy C API directly.
Fix build options for _helperlib to include the numpy C API
Allow compile errors to be displayed in Travis logs
Merge pull request #442 from pitrou/devel

Alternate approach for Numba_recreate_record #2
add support for NUMBAPRO_NVVM env var