Added syslog reporting for failed API login attempts.

classes/api.php

@@ -77,6 +77,7 @@ class API extends Handler {
 				$this->wrap(self::STATUS_OK,	array("session_id" => session_id(),
 					"api_level" => self::API_LEVEL));
 			} else {                                                         // else we are not logged in
+				user_error("Failed login attempt for $login from {$_SERVER['REMOTE_ADDR']}", E_USER_WARNING);
 				$this->wrap(self::STATUS_ERR, array("error" => "LOGIN_ERROR"));
 			}
 		} else {