fix mismatch on NV OCL and some AMD GPUs
Stetch support for Android View classes added (Feature #2840)
gpu : implement Bayer* -> Gray color conversion
Merge pull request #630 from asmorkalov:android_view_stretch
Merge pull request #633 from jet47:gpu-debayer-gray
Fix a bug in ocl::Erode/Dilate, simplify the host logic
Merge pull request #628 from bitwangyaoyao:2.4_fixMoments
Merge pull request #638 from bitwangyaoyao:2.4_fixErode