patch 8.1.1080: when a screendump test fails, moving the file is a hassle

Problem:    When a screendump test fails, moving the file is a hassle.
Solution:   Instead of appending ".failed" to the file name, keep the same
            file name but put the screendump in the "failed" directory.
            Then the file name only needs to be typed once when moving a
            screendump.

src/version.c

@@ -775,6 +775,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1080,
 /**/
     1079,
 /**/