Added make_point_list kernel
Added fill_accum kernel
Added getLines, fill_accum_local kernels
Added accuracy tests with real and generated data
Refactoring, minor optimization
Optimization for getLines
Refactoring and optimization
Remove two "set" kernel call
Update CMakeLists.txt
Also test for target.
initial commit
removed cpp/tutorial_code/images/
fixed warnings in documents
fixed display_image tutorial sample
Optimize OpenCL version function BackgroundSubstractionMOG2
Fixed compilation errors under VS 2010 and Win 7

Applied in PR3240 to 2.4 branch.
Fix linking error under Win 7 - do not import MinCore_Downlevel.lib if target is Win 7 or earlier.

Applied in PR3243 to 2.4 branch.
Fixed MSMF video capture initialization

Applied in PR3251 to 2.4 branch.
Fixed assertion warning in MSMF frame grabber

Applied in PR3251 to 2.4 branch
Fixed MSMF file capture error while opening the file containing unsupported video stream format

Applied in PR3260 to 2.4 branch