added OpenCVFindIPP.cmake script, which will look for IPP installation at CMake configuration time. First, IPPROOT environment variable will be tested, if not found script will look at default install places.
The script should support IPP from 5.3 up to 7.x versions (although tested on Windows for IPP 6.1 and IPP 7.0 versions only)

Preliminary optimization of HOG with IPP added too. Not yet quite efficient, code for cpu branch should be redesigned in order to have better performance.

fixed mouse painting in Qt bindings (to make watershed & inpaint demos work); increased the font in the detailed pixel image display.

avoid use of writable global variables in V4L capturing module (thanks to fjmadrid for the patch! - see the ticket #384)

a crash with the libv4l capture code

Forgot to update so code after previous fix

This was crashing my code:
    for( size_t i = 1; i < imagePoints.size(); i++ )
        objectPoints.push_back(objectPoints[0]);

Changed by:
objectPoints.resize(imagePoints.size(),objectPoints[0]);

Plus clean up on Qt code

--no commit message

Qt: Now OpenGL rendering is ok

fixed "undefined cvCreateCameraCapture_V4L" linker errors on some linux distros (thanks to miguelinux for the patch)

Qt compilation pb with OpenGL flags fixed

temporarily disable 16-bit input in cap_dc1394_v2.cpp (ticket #296). thanks to sebastians for the patch!

Fixed bug with exclusive buttons
Fixed memory leaks