search::KdTree accepts different types of KdTree
Add: ability to add/remove several coordinate systems

This was a requested feature on the mailing list
Update: set ancient version of add/removeCoordinateSystem to deprecated
Fix: deprecated message
Adding bearing angle image to pcl
Bug #294: Completed quoting for parameters of some CMake commands

A Wiki article pointed out that whitespace will only be preserved for parameters
in CMake commands if passed strings will be appropriately quoted or escaped.
http://cmake.org/Wiki/CMake/Language_Syntax#CMake_splits_arguments_unless_you_use_quotation_marks_or_escapes.

Quoting was added so that more places should also handle file names correctly
which contain space characters eventually.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Make kinfu no longer depends on visualization

Only the tools need visualization.
Add: new PCLContextItem Markers to mark several points at once
Add: method to mark a list of points at once

This is faster then looping on markPoint since all the markers are placed in the
same actor and rendered only once.
added a link in the documentation
Fix warnings in io/ply_io.h

> ply_io.h:524:29: warning: private field 'vertex_properties_counter_' is not used [-Wunused-private-field]
Fix warnings in io/ascii_io.cpp

> ascii_io.cpp:109:21: warning: comparison of integers of different signs: 'int' and 'size_type' (aka 'unsigned long') [-Wsign-compare]
> ascii_io.cpp:165:24: warning: comparison of integers of different signs: 'int' and 'size_type' (aka 'unsigned long') [-Wsign-compare]
Fix warnings in io/lzf_image_io.cpp

> lzf_image_io.cpp:243:21: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare]
Fix warnings in io/lzf_image_io.hpp

> lzf_image_io.hpp:329:24: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare]
Fix warnings in io/ifs_io.cpp

> ifs_io.cpp:65:7: warning: unused variable 'specified_channel_count' [-Wunused-variable]
> ifs_io.cpp:190:16: warning: unused variable 'nr_points' [-Wunused-variable]
> ifs_io.cpp:244:16: warning: unused variable 'nr_points' [-Wunused-variable]
Fix warnings in io/lzf_image_io.hpp

> lzf_image_io.hpp:82:21: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
> lzf_image_io.hpp:84:32: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
Fix warnings in io/robot_eye_grabber.cpp

> robot_eye_grabber.cpp:169:21: warning: comparison of integers of different signs: 'int' and 'const size_t' (aka 'const unsigned long') [-Wsign-compare]
Fix warnings in io/dinast_grabber.cpp

> dinast_grabber.cpp:280:44: warning: comparison of integers of different signs: 'size_type' (aka 'unsigned long') and 'int' [-Wsign-compare]
> dinast_grabber.cpp:292:42: warning: comparison of integers of different signs: 'size_type' (aka 'unsigned long') and 'int' [-Wsign-compare]
> dinast_grabber.cpp:310:21: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
> dinast_grabber.cpp:312:23: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
> dinast_grabber.cpp:415:25: warning: comparison of integers of different signs: 'size_type' (aka 'unsigned long') and 'int' [-Wsign-compare]
Fix warnings in io/libpng_wrapper.cpp

> libpng_wrapper.cpp:245:21: warning: comparison of integers of different signs: 'int' and 'png_uint_32' (aka 'unsigned long') [-Wsign-compare]
Fix warnings in 2d/edge.hpp

> edge.hpp:219:28: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare]
> edge.hpp:485:13: warning: unused variable 'height' [-Wunused-variable]
> edge.hpp:486:13: warning: unused variable 'width' [-Wunused-variable]