patch 8.0.0985: libvterm has its own idea of character width

Problem:    Libvterm has its own idea of character width.
Solution:   Use the Vim functions for character width and composing to avoid a
            mismatch. (idea by Yasuhiro Matsumoto)

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    985,
 /**/
     984,
 /**/