patch 9.0.0449: there is no easy way to translate a key code into a string

Problem:    There is no easy way to translate a string with a key code into a
            readable string.
Solution:   Add the keytrans() function. (closes #11114)
diff --git a/src/version.c b/src/version.c
index 2764ad9..3633b19 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    449,
+/**/
     448,
 /**/
     447,