patch 8.0.1305: writefile() never calls fsync()

Problem:    Writefile() never calls fsync().
Solution:   Follow the 'fsync' option with override to enable or disable.

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1305,
 /**/
     1304,
 /**/