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

Conflicts:
	modules/cudaimgproc/test/test_color.cpp
	modules/dynamicuda/include/opencv2/dynamicuda/dynamicuda.hpp
	modules/gpu/perf/perf_imgproc.cpp
	modules/gpu/src/imgproc.cpp
	modules/gpu/test/test_core.cpp
	modules/gpu/test/test_imgproc.cpp
	modules/java/generator/src/cpp/VideoCapture.cpp
	samples/gpu/performance/CMakeLists.txt
	samples/tapi/CMakeLists.txt

modules/highgui/test/test_ffmpeg.cpp

@@ -88,7 +88,7 @@ public:
             stringstream s;
             s << tag;
 
-            const string filename = "output_"+s.str()+".avi";
+            const string filename = tempfile((s.str()+".avi").c_str());
 
             try
             {