Added ability to use externally computed normals to supervoxel clustering
This commit fixes #247 - label colors are now created dynamically as needed
Update to issue #247 to avoid breaking api
add missing stdint.h includes

glibc 2.17->2.18 cleaned some implicit includes in standard headers
again and these two includes were therefore missing to build with
the new lib.
Fix Documentation: sed -i 's/pcd_viewer/pcl_viewer/g'
Replaced std::fill_n. This command does not work as intended in VS2012 Release Mode.

The std::fill_n command appears to have no effect in VS2012 Release Mode.
This caused a crash in pcl_viewer and other examples based on pcl_visualization on Windows with VS2012.
fixed typo 'pcl::NormaleEstimationOMP' at end of document
Fix: prevent usage of qt5