added query point ref node prune
added query point ref node prune

ersanliqiao/mlpack,theranger/mlpack,erubboli/mlpack,ranjan1990/mlpack,darcyliu/mlpack,stereomatchingkiss/mlpack,bmswgnp/mlpack,ersanliqiao/mlpack,ranjan1990/mlpack,palashahuja/mlpack,erubboli/mlpack,minhpqn/mlpack,darcyliu/mlpack,lezorich/mlpack,lezorich/mlpack,palashahuja/mlpack,chenmoshushi/mlpack,Azizou/mlpack,theranger/mlpack,trungda/mlpack,datachand/mlpack,trungda/mlpack,darcyliu/mlpack,palashahuja/mlpack,chenmoshushi/mlpack,thirdwing/mlpack,BookChan/mlpack,chenmoshushi/mlpack,ajjl/mlpack,ajjl/mlpack,datachand/mlpack,minhpqn/mlpack,Azizou/mlpack,theranger/mlpack,ersanliqiao/mlpack,ranjan1990/mlpack,erubboli/mlpack,bmswgnp/mlpack,lezorich/mlpack,stereomatchingkiss/mlpack,minhpqn/mlpack,stereomatchingkiss/mlpack,ajjl/mlpack,thirdwing/mlpack,datachand/mlpack,BookChan/mlpack,BookChan/mlpack,trungda/mlpack,thirdwing/mlpack,bmswgnp/mlpack,Azizou/mlpack