patch 7.4.1573

Problem:    Tests get stuck at the more prompt.
Solution:   Move the backspace test out of test_alot.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1573,
 /**/
     1572,
 /**/