Merge remote-tracking branch 'origin/2.4' into merge-2.4

Conflicts:
	modules/contrib/src/retina.cpp
	modules/core/include/opencv2/core/mat.hpp
	modules/core/src/algorithm.cpp
	modules/core/src/arithm.cpp
	modules/features2d/src/features2d_init.cpp
	modules/gpu/include/opencv2/gpu/gpu.hpp
	modules/gpu/perf/perf_imgproc.cpp
	modules/imgproc/src/generalized_hough.cpp
	modules/ocl/include/opencv2/ocl/ocl.hpp
	modules/video/src/tvl1flow.cpp
	modules/video/src/video_init.cpp

modules/legacy/src/blobtrack.cpp

@@ -205,7 +205,7 @@ double CvVSModule::GetParam(const char* name)
         if(p->pInt) return p->pInt[0];
     }
     return 0;
-};
+}
 
 const char* CvVSModule::GetParamStr(const char* name)
 {

modules/legacy/src/enteringblobdetection.cpp

@@ -209,7 +209,7 @@ public:
     CvBlobDetectorSimple();
    ~CvBlobDetectorSimple();
     int DetectNewBlob(IplImage* pImg, IplImage* pFGMask, CvBlobSeq* pNewBlobList, CvBlobSeq* pOldBlobList);
-    void Release(){delete this;};
+    void Release(){delete this;}
 
 protected:
     IplImage*       m_pMaskBlobNew;
@@ -219,7 +219,7 @@ protected:
 };
 
 /* Blob detector creator (sole interface function for this file) */
-CvBlobDetector* cvCreateBlobDetectorSimple(){return new CvBlobDetectorSimple;};
+CvBlobDetector* cvCreateBlobDetectorSimple(){return new CvBlobDetectorSimple;}
 
 /* Constructor of BlobDetector: */
 CvBlobDetectorSimple::CvBlobDetectorSimple()

modules/legacy/src/vecfacetracking.cpp

@@ -52,7 +52,7 @@ enum
 {
     MOUTH = 0,
     LEYE = 1,
-    REYE = 2,
+    REYE = 2
 };
 
 #define MAX_LAYERS      64