Merged revisions 55328-55341 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

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  r55329 | brett.cannon | 2007-05-14 16:36:56 -0700 (Mon, 14 May 2007) | 3 lines

  Implement the removal of tuple parameter unpacking (PEP 3113).
  Thanks, Tony Lownds for the patch.
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  r55331 | neal.norwitz | 2007-05-14 16:40:30 -0700 (Mon, 14 May 2007) | 1 line

  Update to use Python 3.0
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  r55332 | brett.cannon | 2007-05-14 16:47:18 -0700 (Mon, 14 May 2007) | 2 lines

  Mention PEP 3113.  And thanks to Tony Lownds for the PEP 3113 patch.
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  r55333 | neal.norwitz | 2007-05-14 16:57:06 -0700 (Mon, 14 May 2007) | 1 line

  Fix exception printing (no more exceptions module)
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  r55334 | neal.norwitz | 2007-05-14 17:11:10 -0700 (Mon, 14 May 2007) | 1 line

  Remove popen* functions from os
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  r55335 | neal.norwitz | 2007-05-14 18:03:38 -0700 (Mon, 14 May 2007) | 1 line

  Get rid of most of popen.  There are still some uses I need to cleanup.
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  r55336 | neal.norwitz | 2007-05-14 21:11:34 -0700 (Mon, 14 May 2007) | 1 line

  Remove a few more remnants of the compiler package
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  r55337 | neal.norwitz | 2007-05-14 22:28:27 -0700 (Mon, 14 May 2007) | 1 line

  Get test_[cx]pickle working on 64-bit platforms (avoid overflow int/long)
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diff --git a/Include/Python-ast.h b/Include/Python-ast.h
index 6eec6c3..53a6a4b 100644
--- a/Include/Python-ast.h
+++ b/Include/Python-ast.h
@@ -355,20 +355,9 @@
         asdl_seq *kw_defaults;
 };
 
-enum _arg_kind {SimpleArg_kind=1, NestedArgs_kind=2};
 struct _arg {
-        enum _arg_kind kind;
-        union {
-                struct {
-                        identifier arg;
-                        expr_ty annotation;
-                } SimpleArg;
-                
-                struct {
-                        asdl_seq *args;
-                } NestedArgs;
-                
-        } v;
+        identifier arg;
+        expr_ty annotation;
 };
 
 struct _keyword {
@@ -535,10 +524,8 @@
                            varargannotation, asdl_seq * kwonlyargs, identifier
                            kwarg, expr_ty kwargannotation, asdl_seq * defaults,
                            asdl_seq * kw_defaults, PyArena *arena);
-#define SimpleArg(a0, a1, a2) _Py_SimpleArg(a0, a1, a2)
-arg_ty _Py_SimpleArg(identifier arg, expr_ty annotation, PyArena *arena);
-#define NestedArgs(a0, a1) _Py_NestedArgs(a0, a1)
-arg_ty _Py_NestedArgs(asdl_seq * args, PyArena *arena);
+#define arg(a0, a1, a2) _Py_arg(a0, a1, a2)
+arg_ty _Py_arg(identifier arg, expr_ty annotation, PyArena *arena);
 #define keyword(a0, a1, a2) _Py_keyword(a0, a1, a2)
 keyword_ty _Py_keyword(identifier arg, expr_ty value, PyArena *arena);
 #define alias(a0, a1, a2) _Py_alias(a0, a1, a2)