add adaptive bilateral filter (cpp and ocl version)
fix warnings
Added changes suggested by bug #3186 : fixing the unplugging of webcam
Added the ability to have samples inside a module.
added missing gpu::matchTemplate implementation for non-CUDA build
Link to Hough Circle Transform sample fixed in tutorial.
Merge pull request #1416 from asmorkalov:doc_hough_circle
Merge pull request #1410 from SpecLad:module-samples
Merge pull request #1365 from bitwangyaoyao:2.4_bilateral
Merge pull request #1412 from jet47:gpu-match-template-nocuda
Merge pull request #1376 from StevenPuttemans:bugfix_3186