Update read_config for new API in Python 3.2

--HG--
branch : py3k

src/milla/config.py

@@ -40,8 +40,14 @@ def read_config(filename):
         app.config.update(config)
     '''
 
+    with open(filename) as f:
+        # ConfigParser API changed in Python 3.2
+        if hasattr(configparser.ConfigParser, 'read_file'):
+            cparser = configparser.ConfigParser()
+            cparser.read_file(f)
+        else:
             cparser = configparser.SafeConfigParser()
-    cparser.readfp(open(filename))
+            cparser.readfp(f)
 
     config = {}
     for section in cparser.sections():