patch 8.0.1577: virtual replace test fails on MS-Windows

Problem:    Virtual replace test fails on MS-Windows.
Solution:   Make adding a termcap entry work for a builtin terminal.
            Restore terminal keys in a better way.
diff --git a/src/version.c b/src/version.c
index 65b5d2d..8cc867f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1577,
+/**/
     1576,
 /**/
     1575,