Fix the uname in the makefile for 64 bit
Fix the uname in the makefile for 64 bit

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