patch 8.0.0091

Problem:    Test_help_complete sometimes fails in MS-Windows console.
Solution:   Use getcompletion() instead of feedkeys() and command line
            completion. (Hirohito Higashi)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    91,
 /**/
     90,
 /**/