fix amdFft and amdBlas path
discard comments in kernels.cpp
fix some mismatch
more fix of mismatch functions on CPU OCL
more fix of mismatch
more fix
Merge pull request #705 from bitwangyaoyao:2.4_oclFix
fix for bug #2912 (DescriptorExtractor::compute Java wrapper loses native arg change)
Fix OCL Canny
Merge pull request #712 from apavlenko:fix-2912
Merge pull request #715 from pengx17:2.4_canny_buf