clear_state_bit
state = clear_state_bit(tree, state, clear_bits, 0, end, NULL);
state = clear_state_bit(tree, state, clear_bits, 0, end, NULL);
clear_state_bit(tree, prealloc, clear_bits, 0, end, NULL);
state = clear_state_bit(tree, state, bits, wake, end,
clear_state_bit(tree, prealloc, bits, wake, end, changeset);
state = clear_state_bit(tree, state, bits, wake, end, changeset);