Updated cloud io functionality - removed dependency from VTK legacy
More proper OpneCv+Qt+Vtk issues handling (http://code.opencv.org/issues/3492)
cloud collection merges data only on rendering
fixed size_t/int conversion warnings
proper render call order (fixes some issues with VTK6.1)
default meshlab background
Fixed all OpenGL issues for Macos (via objective-C++ layer)
cloud collection finalize
casting Vec3b operator for viz::Color
Added WidgetMerger, Polyline - colors support for each point independently, simple widgets now compute color array instead of setting global color
fixed crash for windows if console widow is closed or CTRL_C/CTRL_BRAK keys in console are pressed.
source compatibility with master
Hardcode iOS's endianness, since the TestBigEndian module doesn't work there
Merge pull request #2389 from SpecLad:ios-big-endian
Typo
Merge pull request #2398 from nghiaho12:integral_doc
disabled ABF tests
Merge pull request #2406 from ilya-lavrenov:abf
Highgui_Tiff.decode_tile16384x16384 disabled for Android.

Last changes in test leads to SIGKILL on Android.
SIGKILL is called by out of memory killer.
Bug #3391 org.opencv.android.NativeCameraView crashes after latest OpenCV Manager update fixed.

The crash was cased by massive Mat objects leak in NativeCameraView class.