Issue #5748: bytesobject.c should not have its own private defines for stringlib macros. Also removed unused defines and include for localutil.h.
diff --git a/Objects/stringlib/unicodedefs.h b/Objects/stringlib/unicodedefs.h
index 366acfe..c23c392 100644
--- a/Objects/stringlib/unicodedefs.h
+++ b/Objects/stringlib/unicodedefs.h
@@ -21,6 +21,7 @@
#define STRINGLIB_NEW PyUnicode_FromUnicode
#define STRINGLIB_RESIZE PyUnicode_Resize
#define STRINGLIB_CHECK PyUnicode_Check
+#define STRINGLIB_CHECK_EXACT PyUnicode_CheckExact
#define STRINGLIB_GROUPING _PyUnicode_InsertThousandsGrouping
#define STRINGLIB_GROUPING_LOCALE _PyUnicode_InsertThousandsGroupingLocale