Fixed focal length and center point for devices with different rgb and depth resolution.
Merge pull request #844 from nylocx/openni2grabberFix

Fixed focal length and center point for devices with different rgb and depth resolution.
Fix multi openni grabber buffer corruption
Merge pull request #845 from bsyoon/mog

Fix multi openni grabber buffer corruption
Fix for PCLVisualizer::addCube function.
Using vtkLODActor instead of vtkActor to avoid crashes in updateShapePose function.
Merge pull request #846 from nylocx/addCubeFix

Fix for PCLVisualizer::addCube function.
changed line 90 sqrt(3) to std::sqrt(3.0) in grsd.hpp and line 340,376,412 size_t to int in harris_2d.hpp
Merge pull request #847 from rubenkruiper/master

changed grsd.hpp and harris_2d.hpp