Use unicode and remove support for some uses of str8.
diff --git a/Modules/cjkcodecs/cjkcodecs.h b/Modules/cjkcodecs/cjkcodecs.h
index c79b304..9449c1f 100644
--- a/Modules/cjkcodecs/cjkcodecs.h
+++ b/Modules/cjkcodecs/cjkcodecs.h
@@ -261,22 +261,19 @@
 	const MultibyteCodec *codec;
 	const char *enc;
 
-        if (PyUnicode_Check(encoding)) {
-		encoding = _PyUnicode_AsDefaultEncodedString(encoding, NULL);
-		if (encoding == NULL)
-			return NULL;
-	}
-	if (!PyString_Check(encoding)) {
+	if (!PyUnicode_Check(encoding)) {
 		PyErr_SetString(PyExc_TypeError,
 				"encoding name must be a string.");
 		return NULL;
 	}
+	enc = PyUnicode_AsString(encoding, NULL);
+	if (enc == NULL)
+		return NULL;
 
 	cofunc = getmultibytecodec();
 	if (cofunc == NULL)
 		return NULL;
 
-	enc = PyString_AS_STRING(encoding);
 	for (codec = codec_list; codec->encoding[0]; codec++)
 		if (strcmp(codec->encoding, enc) == 0)
 			break;