Add bytes/bytearray.maketrans() to mirror str.maketrans(), and deprecate
string.maketrans() which actually works on bytes.  (Also closes #5675.)
diff --git a/Include/bytes_methods.h b/Include/bytes_methods.h
index 37518d2..e973261 100644
--- a/Include/bytes_methods.h
+++ b/Include/bytes_methods.h
@@ -20,6 +20,9 @@
 extern void _Py_bytes_capitalize(char *result, char *s, Py_ssize_t len);
 extern void _Py_bytes_swapcase(char *result, char *s, Py_ssize_t len);
 
+/* This one gets the raw argument list. */
+extern PyObject* _Py_bytes_maketrans(PyObject *args);
+
 /* Shared __doc__ strings. */
 extern const char _Py_isspace__doc__[];
 extern const char _Py_isalpha__doc__[];
@@ -33,6 +36,7 @@
 extern const char _Py_title__doc__[];
 extern const char _Py_capitalize__doc__[];
 extern const char _Py_swapcase__doc__[];
+extern const char _Py_maketrans__doc__[];
 
 #define FLAG_LOWER  0x01
 #define FLAG_UPPER  0x02