Optimized OpenCL realization of RF mode (more effective data access pattern).
Added some implementations of NC mode on OpenCL.
Fixed bug into kernels.
Some refactoring.
Improved NC OpenCL performance (cache optimization in INDEX implementation).
Removed some trash code.
Merge branch 'master' of github.com:ludv1x/gsoc_opencv_2014

Conflicts:
	opencv_contrib/modules/edgefilter/src/dtfilter_ocl.cpp