patch 8.0.0515: ml_get errors in silent Ex mode

Problem:    ml_get errors in silent Ex mode. (Dominique Pelle)
Solution:   Clear valid flags when setting the cursor.  Set the topline when
            not in full screen mode.
diff --git a/src/version.c b/src/version.c
index 79c97f9..c114d8f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    515,
+/**/
     514,
 /**/
     513,