patch 9.0.1313: some settings use the current codepage instead of 'encoding'

Problem:    Some settings use the current codepage instead of 'encoding'.
Solution:   Adjust how options are initialized. (Ken Takata, closes #11992)
diff --git a/src/version.c b/src/version.c
index 080c3ad..57b35d7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1313,
+/**/
     1312,
 /**/
     1311,