Fixes virtualenv issue 109

virtualenv_doctests.patch

diff --git a/virtualenv.py b/virtualenv.py
index f49f3a3..b16aacb 100755
--- a/virtualenv.py
+++ b/virtualenv.py
@@ -337,7 +337,7 @@ class Logger(object):
 
     def level_matches(self, level, consumer_level):
         """
-        >>> l = Logger()
+        >>> l = Logger([])
         >>> l.level_matches(3, 4)
         False
         >>> l.level_matches(3, 2)
@@ -355,7 +355,7 @@ class Logger(object):
             start, stop = level.start, level.stop
             if start is not None and start > consumer_level:
                 return False
-            if stop is not None or stop <= consumer_level:
+            if stop is not None and stop <= consumer_level:
                 return False
             return True
         else: