opencv_wrapper: use opencv2-style includes

If old opencv1-style legacy include directory is available, this change
becomes purely cosmetic (maybe will compile a bit faster).
It becomes an FTBFS fix when opencv1-style include directory is missing
(i.e. from opencv-3.0).
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/video_filter/opencv_wrapper.c

@@ -39,8 +39,8 @@
 #include <vlc_image.h>
 #include "filter_picture.h"
 
-#include <cxcore.h>
-#include <cv.h>
+#include <opencv2/core/core_c.h>
+#include <opencv2/core/types_c.h>
 
 /*****************************************************************************
  * Local prototypes