backup 3D to branch
Merge branch 'master' into 3d

Conflicts:
	globOpt/scripts/run.sh
compiles, planePrimitive corrected, util.hpp ported
- added scene normalization to subsample
- added temporary toy example cloud to subsample.cpp
- removed stretch warning from planeprimitive
- added indices to getcentroid in util.hpp
- added getminmax3D, PCA, transformPointcloud, and cloud2local functions to util.hpp
- rearranged util.hpp so that the in-file function calls work.
- merged Nicolas' changes to run.sh to Aron's version
- merged util.hpp versions conflictfree
- merging.hpp uses getCentroid properly

Merge remote-tracking branch 'origin/master' into 3d

Conflicts:
	globOpt/scripts/run.sh
- fixed cloud2local for loop stop condition.
- added documentation to util.hpp
- fixed getminmax3D giving wrong results
- added scene-size option to subsample
Merge branch 'master' of https://github.com/amonszpart/globOpt