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
added 3-channels support to optimized version
Merge pull request #2500 from akarsakov:hog_intel_fix
Merge pull request #2495 from ilya-lavrenov:tapi_flip
Merge pull request #2501 from asmorkalov:android_native_camera_qualcomm
added gpu type selection in OPENCV_OPENCL_DEVICE parser
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 #2506 from apavlenko:lbp_ocl_use_any_device
Merge pull request #2508 from akarsakov:fix_erode_intel
changing default perf strategy from BASIC (old) to SIMPLE (new, faster)
Merge pull request #2489 from vbystricky:iocl_pyrlk
Merge pull request #2454 from apavlenko:2.4_haar_extend
Added test code for I/O of user-defined types.
Fixed Load, Modify, and Save an Image tutorial
Keep definitions of link aliases consistent
Added guard to prevent from gpu module redefinition in OpenCV.mk