do not include too many requirements that are only required for unit tests.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk/utils@42144 20353a03-c40f-0410-a6d1-a30d3c3de9de

setup.py

@@ -16,7 +16,7 @@ install_require_list = [
           'WSGIUtils',
           'psutil>=0.2.0',
           'lxml',
-          'python-magic',
+          # 'python-magic', # required for unit tests only
       ]
 if sys.version_info < (2, 7):
   install_require_list.append('argparse')