some changes, fix opencv

Joseph Redmon

2016-06-09 8a6ba2fff3ee1c14bca0aa0e0a909aba7057cc94

 src/cost_layer.h

@@ -1,7 +1,7 @@
#ifndef COST_LAYER_H
#define COST_LAYER_H
#include "params.h"
#include "layer.h"
#include "network.h"

typedef layer cost_layer;