title: Numpy build fails with cannot import multiarray
body: <p>I'm using homebrew python on Mavericks, trying to build numpy 1.8.  Unfortunately, when I try to install numpy, I get the following error: <a href="https://gist.github.com/ngoldbaum/8592039">https://gist.github.com/ngoldbaum/8592039</a></p>
  
  <p>I'm able to build numpy 1.7.2 with <code>pip install numpy==1.7.2</code>, but numpy 1.8 always fails to build with the same traceback.</p>