patch 8.0.0034

Problem:    No completion for ":messages".
Solution:   Complete "clear" argument. (Hirohito Higashi)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    34,
 /**/
     33,
 /**/