Merge branch 'master' into gpu-cuda-rename

Conflicts:
	modules/core/include/opencv2/core/cuda.hpp
	modules/cudacodec/src/thread.cpp
	modules/cudacodec/src/thread.hpp
	modules/superres/perf/perf_superres.cpp
	modules/superres/src/btv_l1_cuda.cpp
	modules/superres/src/optical_flow.cpp
	modules/videostab/src/global_motion.cpp
	modules/videostab/src/inpainting.cpp
	samples/cpp/stitching_detailed.cpp
	samples/cpp/videostab.cpp
	samples/gpu/stereo_multi.cpp

modules/cudastereo/src/disparity_bilateral_filter.cpp

@@ -200,7 +200,7 @@ namespace
 
 Ptr<cuda::DisparityBilateralFilter> cv::cuda::createDisparityBilateralFilter(int ndisp, int radius, int iters)
 {
-    return new DispBilateralFilterImpl(ndisp, radius, iters);
+    return makePtr<DispBilateralFilterImpl>(ndisp, radius, iters);
 }
 
 #endif /* !defined (HAVE_CUDA) */

modules/cudastereo/src/stereobm.cpp

@@ -179,7 +179,7 @@ namespace
 
 Ptr<cuda::StereoBM> cv::cuda::createStereoBM(int numDisparities, int blockSize)
 {
-    return new StereoBMImpl(numDisparities, blockSize);
+    return makePtr<StereoBMImpl>(numDisparities, blockSize);
 }
 
 #endif /* !defined (HAVE_CUDA) */

modules/cudastereo/src/stereobp.cpp

@@ -361,7 +361,7 @@ namespace
 
 Ptr<cuda::StereoBeliefPropagation> cv::cuda::createStereoBeliefPropagation(int ndisp, int iters, int levels, int msg_type)
 {
-    return new StereoBPImpl(ndisp, iters, levels, msg_type);
+    return makePtr<StereoBPImpl>(ndisp, iters, levels, msg_type);
 }
 
 void cv::cuda::StereoBeliefPropagation::estimateRecommendedParams(int width, int height, int& ndisp, int& iters, int& levels)

modules/cudastereo/src/stereocsbp.cpp

@@ -366,7 +366,7 @@ namespace
 
 Ptr<cuda::StereoConstantSpaceBP> cv::cuda::createStereoConstantSpaceBP(int ndisp, int iters, int levels, int nr_plane, int msg_type)
 {
-    return new StereoCSBPImpl(ndisp, iters, levels, nr_plane, msg_type);
+    return makePtr<StereoCSBPImpl>(ndisp, iters, levels, nr_plane, msg_type);
 }
 
 void cv::cuda::StereoConstantSpaceBP::estimateRecommendedParams(int width, int height, int& ndisp, int& iters, int& levels, int& nr_plane)