Silence warnings under -3 triggered by wsgiref.
diff --git a/Lib/wsgiref/simple_server.py b/Lib/wsgiref/simple_server.py
index 95996cc..1b0a4b2 100644
--- a/Lib/wsgiref/simple_server.py
+++ b/Lib/wsgiref/simple_server.py
@@ -169,7 +169,7 @@
     print >>stdout
     h = environ.items(); h.sort()
     for k,v in h:
-        print >>stdout, k,'=',`v`
+        print >>stdout, k,'=', repr(v)
     start_response("200 OK", [('Content-Type','text/plain')])
     return [stdout.getvalue()]