Several fixes for lintian varnings
Merge pull request #3147 from asmorkalov:ocv_deb_lintian_fixes
fix CUDA LUT implementation

In CUDA 6.0 there was a bug in NPP LUT implementation (invalid results when
src == 255). In CUDA 6.5 the bug was fixed.

Replaced NPP LUT call with own implementation (ported from master branch) 
to be independant from CUDA Toolkit version.
Merge pull request #3164 from jet47:fix-cuda-lut
Fixed crash in SSE implementation of FREAK descriptor when number of pairs is set to something other than 512.

See http://code.opencv.org/issues/3889 for more details
Merge pull request #3178 from jimcamel:freak_sse_bugfix