[ci skip] Update info on function_usable
diff --git a/system/core/Common.php b/system/core/Common.php
index e5dd843..07f0c6d 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -756,6 +756,11 @@
* *suhosin.executor.disable_eval*. These settings will just
* terminate script execution if a disabled function is executed.
*
+ * The above described behavior turned out to be a bug in Suhosin,
+ * but even though a fix was commited for 0.9.34 on 2012-02-12,
+ * that version is yet to be released. This function will therefore
+ * be just temporary, but would probably be kept for a few years.
+ *
* @link http://www.hardened-php.net/suhosin/
* @param string $function_name Function to check for
* @return bool TRUE if the function exists and is safe to call,