* add test for imfix ,test=develop

* fix group like 3x3,test=develop

* add direct release build script, test=develop

* fix group like conv , test=develop

* [mobile][opencl] increase male2fe gan model

* element mul d3

* remove useless initempty image in transpose2 ,test=develop

* update test ,test=develop

* [mobile][opencl]common deepwise conv,test=mobile

* [mobile][opencl]revert deepwise 3x3 for stable ,test = mobile

* [mobile][opencl]format convkernel.inc.cl with clang-format ,test = mobile

* [mobile][opencl] suite 1*X Y element_y ,test=mobile

* [mobile][opencl] add whole print method for cl_image ,test=mobile

optimise conv 1x1 ... ,test=develop (#2388)

* optimize GPU conv performance and structure

* add CL macro for test_conv_gpu

* fix build failure