New SLIC function: Liberate(): Gives the city to good old barbs. Only works in messages, where the city is given from the context.

SFN_ERROR Slic_Liberate::Call(SlicArgList *args)
{
    if (args->Count() > 0)
        return SFN_ERROR_NUM_ARGS;

	Unit city = g_slicEngine->GetContext()->GetCity(0);

	if (!city.IsValid()) 
    {
		return SFN_ERROR_OK;
	}

	if(!city.GetData()->GetCityData()->CapturedThisTurn()) {
		if(g_network.IsClient()) {
			g_network.RequestResync(RESYNC_PROBABLE_CHEATER);
		}
		return SFN_ERROR_OK;
	}

	if(g_network.IsClient()) {
		g_network.SendAction(new NetAction(NET_ACTION_FREE_SLAVES, city.m_id));
	}

	//if(!args->GetInt(0, cause)) 
	//	return GEV_HD_Continue;

    city.ResetCityOwner(PLAYER_INDEX_VANDALS, FALSE, CAUSE_REMOVE_CITY_DIPLOMACY);

    return SFN_ERROR_OK;
}