Calib3d badarg tests fixed. Default exception handling enabled;
Highgui Video I/O tests fixed on ARM;
Code cleanup.

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

The changes must be applied after buildbot update only!

Windows RT sample cleanup.
Video I/O code cleanup.

Unused scenarious removed.
Grey scale convertion replaced with cv::Canny call.

Merged android.toolchain.cmake from project
https://github.com/taka-no-me/android-cmake
commit: fd1f7055f8b7338644d58d9a2015a784dfa3a5ca

Fixed flann build with NEON;
Fixed Haming distance with NEON;
Honest cvRound for WinRT added;
cvRound test added;
Video IO with direct show disabled;

GPU module turned off;
TIFF support turned off;
Windows Managment and Video IO (VFW) turned off.

HardFP and SoftFP toolchains joined to one;
RPATH skiping added.

Toolchain for arm hardfp added.