note 24909 deleted from function.ignore-user-abort by nlopess

Note Submitter: ---- It seems that this function does not perform anything on servers configured in "Safe Mode". This Safe Mode behavior can be seen as a security feature, however this creates a security issue when the user aborts in the middle of a critical update operation (for example when saving updated data in a locked text file, because this usually means truncating the existing content then writing the new data: the user abort event can occur just after truncation but before data is saved in the text file!) The only way to avoid this problem is to use a database with rollback logs that allow performing transaction safe updates.