fixed coding style in ``..._post``
added feature ``error_retry_count`` to core
fixed ``excl_list`` for ``task.acc_save`` in module ``ff_post``
fixed ``excl_list`` for ``task.acc_save`` in module ``wp_post``
fixed ``excl_list`` for ``task.acc_save`` in module ``li_post``
fixed ``excl_list`` for ``task.acc_save`` in module ``lj_post``