bunch more __all__ lists
also modified check_all function to suppress all warnings since they aren't
relevant to what this test is doing (allows quiet checking of regsub, for
instance)
diff --git a/Lib/rlcompleter.py b/Lib/rlcompleter.py
index 8cd21ed..4f05ba3 100644
--- a/Lib/rlcompleter.py
+++ b/Lib/rlcompleter.py
@@ -43,6 +43,8 @@
 import __builtin__
 import __main__
 
+__all__ = ["Completer"]
+
 class Completer:
 
     def complete(self, text, state):