Disabled native_sqrt for double, since it may be not implemented and gives compilation error.
fix for cv::memopTypeToStr
Fixes for compiling with CUDA 6.5

Based on commit feb74b125d7923c0bc11054b66863e1e9f753141 from 2.4.9 branch.
don't use IPP on ARM
Merge pull request #3176 from ilya-lavrenov:ipp_arm
Merge pull request #3166 from akarsakov:ocl_native_sqrt
Merge pull request #3173 from rokm:cuda-6.5
Merge pull request #3170 from ElenaGvozdeva:ocl_fix