Merge pull request #3006 from vlakoff/security

Fix in $_protected array of register_globals security procedure
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 4f625b1..9df042f 100644
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -89,7 +89,7 @@
 			'_COOKIE',
 			'GLOBALS',
 			'HTTP_RAW_POST_DATA',
-			'system_folder',
+			'system_path',
 			'application_folder',
 			'view_folder',
 			'_protected',