Add GPU models in seperate folder, only old models are supported and they were replaced to make the CPU interface work.
This solves the undesired consequence of breaking the GPU interface.

Because why not?

(cherry picked from commit b86088b8)

Added opencv_testing.sh.in file;
opencv_testing.sh installation guarded by OS check.
(cherry picked from commit d9dc5ffa)

Added opencv_testing.sh.in file;
opencv_testing.sh installation guarded by OS check.

(cherry picked from commit f332cba1)

(cherry picked from commit b75cbfde)

Conflicts:

	cmake/OpenCVModule.cmake

modified facedetect to properly display very oblong objects and optionally flip image horizontally (for profile face detection). Added LBP cascades by Attila Novak for profile face detection and silverware detection (those are results of GSoC 2012)

Added pedestrian detection trained model for HOG cascade detection algorithm.

* Fixed zlib search.
* Fixed compiler/linker flags caching bug.
* Fixed OpenCVConfig.cmake generation (currently tested only on Unix).