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.

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1349,
 /**/
     1348,
 /**/