patch 8.0.0263: Farsi support is not tested enough

Problem:    Farsi support is not tested enough.
Solution:   Add more tests for Farsi.  Clean up the code.
diff --git a/src/version.c b/src/version.c
index 17d9e63..67fe69b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    263,
+/**/
     262,
 /**/
     261,