numpy/numpy — pull request #5271 by matthew-brett (2014-11-10 20:25:01+00:00)
Title: MAINT: give up on rackspace wheels

Rackspace wheels (from http://wheels.scikit-image.org) are giving timeouts,
again - e.g.:

https://travis-ci.org/numpy/numpy/jobs/40578751

Use Nathaniel's trick of not compiling Cython, for speed, and to work round
previous Cython build breakage.