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)
diff --git a/src/version.c b/src/version.c
index 39bad6c..b5e4539 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1277,
+/**/
     1276,
 /**/
     1275,