- Remove BUILD_TEST and TBB_LIB_DIR variables not used by cmake.
- Add BRs: tesseract-devel, protobuf-devel, glog-devel, doxygen,
gflags-devel, SFML-devel, libucil-devel, qt5-qtbase-devel, mesa-libGL-devel,
mesa-libGLU-devel and hdf5-devel.
- Remove BR: vtk-devel because VTK support is disabled. Incompatible
combination: OpenCV + Qt5 and VTK ver.6.2.0 + Qt4
- Enable build with Qt5.
- Enable build with OpenGL.
- Enable build with UniCap.
- Also requires opencv-contrib when install opencv-devel (#1329790).