OpenCV Version 2.4.6;
OpenCV Manager Version 2.8;
Doc fixes.

If we have perfect matches (min_dist == 0.0), then strict comparison
fails. Making it non-strict results in treating perfect matches as
good.

1. created module bioinspired. 2.transfered Retina module into the new module bioinspired. 3. added a fast tone mapping method to Retina interface and wrapped existing reinafilter dedicated method

Also, removed the one from modules/python/src2/cv.py and cleared its
executable bit, since it's not a script.

sample code : https://github.com/Itseez/opencv/blob/master/samples/cpp/tutorial_code/features2D/SURF_descriptor.cpp

Bug #2888

OpenCV Manager verison incremeneted;
Docs and tests updated accordingly;
COnstant for Manager initialization added.

e.g. <opencv2/core/core.hpp> become <opencv2/core.hpp>

Also renamed <opencv2/core/opengl_interop.hpp> to <opencv2/core/opengl.hpp>