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/Objects/obmalloc.c b/Objects/obmalloc.c
index 870f93c..a393cbc 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -529,7 +529,7 @@
 		nbytes = numarenas * sizeof(*arenas);
 		if (nbytes / sizeof(*arenas) != numarenas)
 			return NULL;	/* overflow */
-		arenaobj = realloc(arenas, nbytes);
+		arenaobj = (struct arena_object *)realloc(arenas, nbytes);
 		if (arenaobj == NULL)
 			return NULL;
 		arenas = arenaobj;