Conversion of exceptions over from faked-up classes to new-style C types.
diff --git a/Lib/test/exception_hierarchy.txt b/Lib/test/exception_hierarchy.txt
index 5fff7d9..58131d7 100644
--- a/Lib/test/exception_hierarchy.txt
+++ b/Lib/test/exception_hierarchy.txt
@@ -15,6 +15,7 @@
       |    |    +-- IOError
       |    |    +-- OSError
       |    |         +-- WindowsError (Windows)
+      |    |         +-- VMSError (VMS)
       |    +-- EOFError
       |    +-- ImportError
       |    +-- LookupError
@@ -43,5 +44,4 @@
            +-- SyntaxWarning
            +-- UserWarning
            +-- FutureWarning
-	   +-- OverflowWarning [not generated by the interpreter]
 	   +-- ImportWarning