Fix distutil test

https://travis-ci.org/serge-sans-paille/pythran/jobs/35088901
On Mon, Sep 15, 2014 at 02:36:55AM -0700, pbrunet wrote:
> In pythran/tests/test_distutils.py:
> > @@ -12,7 +13,7 @@ def test_setup_build(self):
> >                     cwd=os.path.join(cwd, 'test_distutils'))
> >          check_call(['python', 'setup.py', 'install', '--
> prefix=demo_install'],
> >                     cwd=os.path.join(cwd, 'test_distutils'))
> > -        check_call(['python', '-c', 'import demo'],
> > +        check_call(['python', '-c', '&quot;import demo&quot;'],
> As disutils fails on the original contruct, I though it was because you write :
> python -c "import demo" (in shell) and not python -c import demo.
> I can't reproduce this issue on my computer so I push this PR to test if it is
> the solution. If it is not, you can close it.

I do reproduce the issue on my environnment, it's a missing symbol from
openmp (!)

Witn the qhotes it's like ly to work, but the test becomes useless, it
is equivalent to

python -c '"import demo"'

:-)