Add vsnprintf
Add vsnprintf

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