Fixed some build warnings

modules/videostab/src/clp.hpp

@@ -44,6 +44,13 @@
 #define __OPENCV_VIDEOSTAB_CLP_HPP__
 
 #ifdef HAVE_CLP
+  #undef PACKAGE
+  #undef PACKAGE_BUGREPORT
+  #undef PACKAGE_NAME
+  #undef PACKAGE_STRING
+  #undef PACKAGE_TARNAME
+  #undef PACKAGE_VERSION
+  #undef VERSION
   #include "ClpSimplex.hpp"
   #include "ClpPresolve.hpp"
   #include "ClpPrimalColumnSteepest.hpp"

samples/c/fback_c.c

 #include "opencv2/video/tracking.hpp"
 #include "opencv2/highgui/highgui.hpp"
+#include "opencv2/imgproc/imgproc_c.h"
 #include <stdio.h>
 void help()
 {

samples/c/motempl.c

 #include "opencv2/video/tracking.hpp"
-#include "opencv2/imgproc/imgproc.hpp"
 #include "opencv2/highgui/highgui.hpp"
+#include "opencv2/imgproc/imgproc_c.h"
 #include <time.h>
 #include <stdio.h>
 #include <ctype.h>