Fix the compiler package w.r.t. the new metaclass syntax.
(It is still broken w.r.t. the new nonlocal keyword.)

Remove a series of debug prints I accidentally left in test_ast.py.
diff --git a/Lib/compiler/transformer.py b/Lib/compiler/transformer.py
index f07ec97..3d4bb4f 100644
--- a/Lib/compiler/transformer.py
+++ b/Lib/compiler/transformer.py
@@ -288,16 +288,16 @@
     old_lambdef = lambdef
 
     def classdef(self, nodelist):
-        # classdef: 'class' NAME ['(' [testlist] ')'] ':' suite
+        # classdef: 'class' NAME ['(' [arglist] ')'] ':' suite
 
         name = nodelist[1][1]
         doc = self.get_docstring(nodelist[-1])
         if nodelist[2][0] == token.COLON:
-            bases = []
+            arglist = CallFunc(None, [])
         elif nodelist[3][0] == token.RPAR:
-            bases = []
+            arglist = CallFunc(None, [])
         else:
-            bases = self.com_bases(nodelist[3])
+            arglist = self.com_call_function(None, nodelist[3])
 
         # code for class
         code = self.com_node(nodelist[-1])
@@ -307,7 +307,8 @@
             assert isinstance(code.nodes[0], Discard)
             del code.nodes[0]
 
-        return Class(name, bases, doc, code, lineno=nodelist[1][2])
+        return Class(name, arglist.args, arglist.star_args, arglist.dstar_args,
+                     doc, code, lineno=nodelist[1][2])
 
     def stmt(self, nodelist):
         return self.com_stmt(nodelist[0])