Adapt cap_openni.cpp to the new Ptr.
fixed pyrlk optical flow
Merge pull request #1565 from SpecLad:cmake-new-ptr
fixed mog2
added plain branch to HoughCircle perf test
adds include to fix build
add include limits, for compilers that dont add it implicitly
Merge pull request #1 from ImAlsoGreg/master

add include limits, for compilers that dont add it implicitly
Merge pull request #1568 from ilya-lavrenov:ocl_pyrlk
Merge pull request #1572 from emchristiansen:includeLimits
Merge pull request #1569 from ilya-lavrenov:ocl_hough_circles