Video i/o tests enabled for media foundation;
Negative stride support added to VideoCapture;
Error handling improved, dead lock in case of playback error fixed;
Some code refacotring done.

I* + SafeRelease -> ComPtr.

Camera-based VideoCapture updated to fit changes in ImageGrabber from prev
commit

Set and Get methods are not implemented;
Camera based video capture is broken due to modifications.

FourCC parameter handlig added;
Smart pointers instead SafeRelease call;
Windows RT support (vertical mirroring).

Code formating fixed;
GrabFrame method implemented correclty.

* In comparison column headers, switched the order of labels, so that
  it's "to" vs "from".

* When a test was present, but not run successfully, put its status in
  the corresponding cell instead of coloring it gray.

The bug was found that all 3-channel oclMat's were converted to
4-channel oclMat's after using convertTo function.

Namely, normalize their names to a common convention and remove useless text
from their values.

There is no WIN64 defined in the environment.

Simle Java test for computeCorrespondEpilines added.