patch 8.0.1349: options test fails when using Motif or GTK GUI

Problem:    Options test fails when using Motif or GTK GUI.
Solution:   Use "fixed" instead of "fixedsys" for Unix. Don't try "xxx" for
            guifonteset.  Don't set 'termencoding' to anything but "utf-8" for
            GTK.  Give an error if 'termencoding' can't be converted.
diff --git a/src/version.c b/src/version.c
index 8f0625d..d44289a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1349,
+/**/
     1348,
 /**/
     1347,