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.
diff --git a/src/version.c b/src/version.c
index 092077f..a967fea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -796,6 +796,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    733,
+/**/
     732,
 /**/
     731,