* fixed BIMEF test failures and very slightly optimized (there is a _lot_ of room for the further optimization)
* dummy commit to rerun tests
* fixed contrib tests
* seem to fixed one more opencv_face test
* maybe adding some whitespaces will help? )
* hopefully fixed the remaining test failures
build error fix: remove trailing whitespaces, casting types
minor edits based on alalek's feedback
removing trailing whitespace
using std::array for LUT argument
