patch 8.0.0778: in a terminal the cursor may be hidden

Problem:    In a terminal the cursor may be hidden and screen updating lags
            behind. (Nazri Ramliy)
Solution:   Switch the cursor on and flush output when needed. (Ozaki Kiichi)

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    778,
 /**/
     777,
 /**/