Move non-CV functionality from core.hpp to separate utility.hpp header

samples/c/mser_sample.cpp

@@ -2,9 +2,10 @@
  * Copyright (C) 2009, Liu Liu All rights reserved.
  */
 
-#include "opencv2/highgui/highgui.hpp"
-#include "opencv2/features2d/features2d.hpp"
-#include "opencv2/imgproc/imgproc.hpp"
+#include <opencv2/core/utility.hpp>
+#include "opencv2/highgui.hpp"
+#include "opencv2/features2d.hpp"
+#include "opencv2/imgproc.hpp"
 
 #include <iostream>
 #include <stdio.h>