[osgeo4w-dev] Adding OpenCV to OSGeo4W

[Julien Malik]

Hello all,

In preparation of a future OrfeoToolbox release, I just added a new 
OpenCV package.
Latest release (2.4.5), with python bindings if ever any Qgis plugin 
would need it in the future.

Primary interest was in the machine learning module providing lots of 
supervised classification algorithms, but the rest library is available.

Wiki page added for the package, with packaging information.
I will maintain the package.

Cheers,
Julien