[ci skip] Formally deprecate 'global_xss_filtering'
diff --git a/application/config/config.php b/application/config/config.php
index 7d5c24c..7be482b 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -404,6 +404,9 @@
| Determines whether the XSS filter is always active when GET, POST or
| COOKIE data is encountered
|
+| WARNING: This feature is DEPRECATED and currently available only
+| for backwards compatibility purposes!
+|
*/
$config['global_xss_filtering'] = FALSE;