fix some bug and this version can auto change the hostname
fix some bug and this version can auto change the hostname

gavin-gui/hosts,gavin-gui/hosts,lifenglsf/hosts,ruidalin/hosts,racaljk/hosts,coolrc136/hosts,lifenglsf/hosts,wsdjeg/hosts,lifenglsf/hosts,Xiejiayun/hosts,Xiejiayun/hosts,VegetaPn/hosts,Xiejiayun/hosts