some formal changes (generally adding constness)
fixing Mac build
fixing error, wrong template method param.
fix binary package build
small fix for GaussianBlur ocl test
Merge pull request #3064 from ElenaGvozdeva:ocl_GaussianBlur
Merge pull request #3065 from alalek:fix_binary_package_build
Merge pull request #3057 from Adil-Ibragimov:adding-constness