Remove typehint from exception handler

This exception handler can be passed Exceptions as well as Errors. In
PHP7 those both fall under the parent class 'Throwable', but for PHP5
BC it's advised to just remove the typehint entirely

Author: mkopinsky

lib/test/sfTestFunctionalBase.class.php

@@ -480,7 +480,7 @@ static public function handlePhpError($errno, $errstr, $errfile, $errline)
    *
    * @param Exception $exception The exception
    */
-  function handleException(Exception $exception)
+  function handleException($exception)
   {
     $this->test()->error(sprintf('%s: %s', get_class($exception), $exception->getMessage()));