patch 8.0.1277: terminal window CR-NL conversions may cause problems

Problem:    Terminal window CR-NL conversions may cause problems.
Solution:   Avoid most conversions, only fetch the current backspace key value
            from the tty. (mostly by Ozaki Kiichi, closes #2278)

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1277,
 /**/
     1276,
 /**/