modified OpenCL SURF API and the tests in 2.4.x to prove that it gives different from CPU results
made SURF_OCL default constructor parameters the same as SURF
modified SURF's performance test to test OpenCL version as well
fixed doc builder warnings; make sure the tests give reasonable results when OpenCL is not available
made the example consistent with the fuction definition and improved doc

made the example consistent with the fuction definition and improved doc
It's will be better
I have changed one sentence in tutorial, making it more understandable
1. fix an error in sample code
2. change an external link to maintain consistency with the previous tutorial
switching to CV_HAAR_SCALE_IMAGE mode, enabling test
Libraries filter update after abs path cut.
Merge pull request #2423 from RJ2:bugfix_5
Merge pull request #2400 from RJ2:Bugfix_2
Native camera fix for some deivices with Qualcomm SoC like Samsung Galaxy S4.
adding missing include (fixing 'no ocl implementation' error)
remove highlighting in some function links

1. Remove whole-document highlighting in some function links
2. fix the function alias `readwriteimagevideo`
Merge pull request #2510 from asmorkalov:android_cuda_filter_fix
Merge pull request #2501 from asmorkalov:android_native_camera_qualcomm
Multiple fixes in camera.

Fixed constant value for focus mode FOCUS_MODE_CONTINUES_PHOTO;
Add setters and getters for exposure lock and white balance lock flags;
Excluded camera restart for all setters except frame size.
Implicit linkage with CUDA runtime reverted.
Merge pull request #2454 from apavlenko:2.4_haar_extend