dist.mak: avoids deleting download folder when uploading to the sandbox
dist.mak: avoids deleting download folder when uploading to the sandbox

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