Feature Proposal : Make All Python Extensions User Configuration Independent (#1435)

* Updated all Python extension packages to use 'setup_py' on install.

* Fixed a few minor style issues with the updated Python packages.

var/spack/repos/builtin/packages/py-shiboken/package.py

@@ -64,6 +64,4 @@ def patch(self):
             'shiboken_postinstall.py')
 
     def install(self, spec, prefix):
-        python('setup.py', 'install',
-               '--prefix=%s' % prefix,
-               '--jobs=%s' % make_jobs)
+        setup_py('install', '--prefix=%s' % prefix, '--jobs=%s' % make_jobs)