aib cost bugfixes
aib cost bugfixes

j-bo/vlfeat,richarddzh/vlfeat,mylxiaoyi/vlfeat,cvfish/vlfeat,qubick/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,qubick/vlfeat,hongzhili/vlfeat,richarddzh/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,mylxiaoyi/vlfeat,erexhepa/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,mylxiaoyi/vlfeat,j-bo/vlfeat,rxl194/vlfeat,qubick/vlfeat,CansenJIANG/vlfeat,rxl194/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,CansenJIANG/vlfeat,WangDequan/vlfeat,vlfeat/vlfeat,rxl194/vlfeat,cvfish/vlfeat,rxl194/vlfeat,erexhepa/vlfeat,j-bo/vlfeat,cvfish/vlfeat,CansenJIANG/vlfeat,qubick/vlfeat,WangDequan/vlfeat,erexhepa/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,WangDequan/vlfeat,erexhepa/vlfeat,WangDequan/vlfeat,j-bo/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,qubick/vlfeat,cvfish/vlfeat,richarddzh/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,j-bo/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,richarddzh/vlfeat,CansenJIANG/vlfeat,qubick/vlfeat,vlfeat/vlfeat