apps/phow_caltech101.m: minor tweaks and sovles a compatibility issue
apps/phow_caltech101.m: minor tweaks and sovles a compatibility issue

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