Fix for (Bug #2789)

Add MatlabFormatter for matlab style output.
See http://code.opencv.org/issues/2789
Merge branch 'master' into matlab_formatter
cv::findContours: Check if type of output data structure is right to store contours (vector<vector<Point>>).
Fixed scanning bug identified in comments in pull request #1119.
NFA calculations now generate better line segments.
Issue #3709 - PyBindings for LSD

Corrected crashing in Python bindings while using LSD_REFINE_NONE flags
Corrected not drawing lines in drawSegments and compareSegments in Python bindings
Removed "CV_" prefix from constants in docs

The `calib3d.hpp` has a definition of the constant that does not contain the prefix "CV_".
The affected methods were `findHomography` and `findEssentialMat`.
Now the documentation updates the definition of the constants to conform to the header.
changed support for 3-channels, changed CCOEFF
changed CCOEFF cn==1
added dft for CCORR
used vector data types for CCORR cn==1
replaced factors computation by precomputed values, added kernel for
binary mode
Fixed core for CCORR and SQDIFF. Used float instead of int for CV_8U. Fixed conditions for call dft.
Updates python feature matching tutorial

The given ORB parameter was misspelled
Merge pull request #2892 from PhilLab:patch-1
removed contrib, legacy and softcsscade modules; removed latentsvm and datamatrix detector from objdetect. removed haartraining and sft apps.
some of the stuff will be moved to opencv_contrib module.
in order to make this PR pass buildbot, please, comment off opencv_legacy, opencv_contrib and opencv_softcascade test runs.
Merge pull request #2786 from ElenaGvozdeva:ocl_matchTemplate
Merge pull request #2881 from mlyashko:moments_opt
put the detection-based tracker back (to objdetect module), so that the Android face detection sample builds fine. The patch by Konstantin Matskevich that adds C++11 threads support has been merged in too. Also, fixed compile error in the doc builder.
removed extra whitespaces
fixed compile warnings on Windows