Merge p3yk branch with the trunk up to revision 45595. This breaks a fair

number of tests, all because of the codecs/_multibytecodecs issue described
here (it's not a Py3K issue, just something Py3K discovers):
http://mail.python.org/pipermail/python-dev/2006-April/064051.html

Hye-Shik Chang promised to look for a fix, so no need to fix it here. The
tests that are expected to break are:

test_codecencodings_cn
test_codecencodings_hk
test_codecencodings_jp
test_codecencodings_kr
test_codecencodings_tw
test_codecs
test_multibytecodec

This merge fixes an actual test failure (test_weakref) in this branch,
though, so I believe merging is the right thing to do anyway.

Include/genobject.h

@@ -13,6 +13,7 @@ typedef struct {
 	PyObject_HEAD
 	/* The gi_ prefix is intended to remind of generator-iterator. */
 
+	/* Note: gi_frame can be NULL if the generator is "finished" */
 	struct _frame *gi_frame;
 
 	/* True if generator is being executed. */
@@ -28,6 +29,7 @@ PyAPI_DATA(PyTypeObject) PyGen_Type;
 #define PyGen_CheckExact(op) ((op)->ob_type == &PyGen_Type)
 
 PyAPI_FUNC(PyObject *) PyGen_New(struct _frame *);
+PyAPI_FUNC(int) PyGen_NeedsFinalizing(PyGenObject *);
 
 #ifdef __cplusplus
 }