cout<<"relative_path="<<relative_path(curr_path,dest_path)<<endl;
if(relative_path(curr_path,dest_path)!=unix_to_local_path("files/myfile.txt"))
cerr<<"Bad relative path"<<endl,ret++;
cout<<"relative_path="<<relative_path(curr_path,dest_path)<<endl;
if(relative_path(curr_path,dest_path)!=unix_to_local_path("files/myfile.txt"))
cerr<<"Bad relative path"<<endl,ret++;