Fix bug with indices
Merge pull request #1001 from ivan-korolev:fix_stitching_bug_2405
Merge pull request #1000 from ivan-korolev:fix_sift_bug_2892
Updated iOS camera. Added rotation flag. Added functions to lock/unlock focus, white balance and exposure.
Merge pull request #929 from dominikrose:mingw-libdc1394-2-windows
Merge pull request #969 from pengx17:2.4_binary_cache
Merge pull request #983 from HapeMask:python3-compatibility
Merge pull request #987 from jet47:bug-3085-fix
Merge pull request #1003 from vhdirk:gstreamerfixes
Merge pull request #1004 from jet47:fix-bug-3068
Merge pull request #1005 from alekcac:doc_fix
Merge pull request #999 from snosov1:unreliable-results-fix
Merge pull request #995 from jet47:fix-bug-2985
Merge pull request #996 from jet47:gpu-nvcuvid-libraries
Merge pull request #978 from jet47:gpuarithm-refactoring
Merge pull request #977 from jet47:gpucodec-refactoring
Added regression tests for SURF/SIFT (related to #2892)
refactored box filter
refactored Linear Filter
refactored Laplacian filter