vl_ubcmatch.c: faster (closes #49)
vl_ubcmatch.c: faster (closes #49)

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