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.
diff --git a/Modules/zipimport.c b/Modules/zipimport.c
index 637dc48..d59ebd8 100644
--- a/Modules/zipimport.c
+++ b/Modules/zipimport.c
@@ -40,7 +40,6 @@
 	PyObject *files;    /* dict with file info {path: toc_entry} */
 };
 
-static PyTypeObject ZipImporter_Type;
 static PyObject *ZipImportError;
 static PyObject *zip_directory_cache = NULL;
 
@@ -171,13 +170,7 @@
 zipimporter_traverse(PyObject *obj, visitproc visit, void *arg)
 {
 	ZipImporter *self = (ZipImporter *)obj;
-	int err;
-
-	if (self->files != NULL) {
-		err = visit(self->files, arg);
-		if (err)
-			return err;
-	}
+	Py_VISIT(self->files);
 	return 0;
 }
 
@@ -958,7 +951,7 @@
 	PyObject *fixed_source;
 
 	/* one char extra for trailing \n and one for terminating \0 */
-	buf = PyMem_Malloc(PyString_Size(source) + 2);
+	buf = (char *)PyMem_Malloc(PyString_Size(source) + 2);
 	if (buf == NULL) {
 		PyErr_SetString(PyExc_MemoryError,
 				"zipimport: no memory to allocate "