patch 8.1.0733: too many #ifdefs for the multi-byte feature

Problem:    Too many #ifdefs for the multi-byte feature.
Solution:   Tentatively always enable the multi-byte feature.  If you have a
            problem with this, please discuss on the Vim maillist.

src/version.c

@@ -795,6 +795,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    733,
 /**/
     732,
 /**/