Also removed malformed tEXt chunk from a logo PNG.

detector/descriptor.

There's no need, since configure_file writes its output using native
line endings, anyway.

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.

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.

OpenCV version incremented;
New CvCameraViewListener interface description added.