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/md5module.c b/Modules/md5module.c
index e12bef8..5e4f116 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -15,7 +15,7 @@
 
 typedef struct {
 	PyObject_HEAD
-        MD5_CTX	md5;		/* the context holder */
+        md5_state_t	md5;		/* the context holder */
 } md5object;
 
 static PyTypeObject MD5type;
@@ -31,7 +31,7 @@
 	if (md5p == NULL)
 		return NULL;
 
-	MD5Init(&md5p->md5);	/* actual initialisation */
+	md5_init(&md5p->md5);	/* actual initialisation */
 	return md5p;
 }
 
@@ -56,7 +56,7 @@
 	if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
 		return NULL;
 
-	MD5Update(&self->md5, cp, len);
+	md5_append(&self->md5, cp, len);
 
 	Py_INCREF(Py_None);
 	return Py_None;
@@ -73,12 +73,12 @@
 static PyObject *
 md5_digest(md5object *self)
 {
- 	MD5_CTX mdContext;
+ 	md5_state_t mdContext;
 	unsigned char aDigest[16];
 
 	/* make a temporary copy, and perform the final */
 	mdContext = self->md5;
-	MD5Final(aDigest, &mdContext);
+	md5_finish(&mdContext, aDigest);
 
 	return PyString_FromStringAndSize((char *)aDigest, 16);
 }
@@ -94,14 +94,14 @@
 static PyObject *
 md5_hexdigest(md5object *self)
 {
- 	MD5_CTX mdContext;
+ 	md5_state_t mdContext;
 	unsigned char digest[16];
 	unsigned char hexdigest[32];
 	int i, j;
 
 	/* make a temporary copy, and perform the final */
 	mdContext = self->md5;
-	MD5Final(digest, &mdContext);
+	md5_finish(&mdContext, digest);
 
 	/* Make hex version of the digest */
 	for(i=j=0; i<16; i++) {
@@ -272,7 +272,7 @@
 		return NULL;
 
 	if (cp)
-		MD5Update(&md5p->md5, cp, len);
+		md5_append(&md5p->md5, cp, len);
 
 	return (PyObject *)md5p;
 }