At the moment a number of source files have no heading with OpenCV license agreement. All source files should have a copy of the license.

And two more concerns about license:
* Do we need to add the same license to CMake and Python scripts released with OpenCV sources? *Approved*
* Probably Itseez should be added to the existing agreement. (Currently there are only Intel and Willow Garage) *Approved*

So, here is number of tasks for Alexander:
# All OpenCV files should have license header, including CMake and Python scripts.
# Files changed by Itseez devs should be augmented with Itseez's copyrights.
# Files changes by Itseez/Tegra devs should also contain NVIDIA's copyrights.
# Auto-generated Java files should also contain license headers.