[Numpy-discussion] Multi-distribution Linux wheels - please test

[Olivier Grisel]

I used docker to run the numpy tests on base/archlinux. I had to
pacman -Sy python-pip openssl and gcc (required by one of the numpy
tests):

```
Ran 5621 tests in 34.482s
OK (KNOWNFAIL=4, SKIP=9)
```

Everything looks fine.

-- 
Olivier