added first draft of statistics.h for HistogramStatistics
Merge branch 'master' of https://github.com/PointCloudLibrary/pcl into histogram
Merge branch 'master' of https://github.com/PointCloudLibrary/pcl into histogram
changed output from std::cout to PCL_INFO in openni_tracking
Bugfix in function pointer, additional made a typedef of the function prototype
Merge branch 'master' of https://github.com/PointCloudLibrary/pcl into histogram
Merge branch 'histogram' of https://github.com/KoenBuys/pcl into people_prob