migrate forwardim2col from outputimagesize to outputsize
migrate forwardim2col from outputimagesize to outputsize

MiniLight/DeepCL,Peilong/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,Peilong/DeepCL,Peilong/DeepCL,FighterLYL/DeepCL,Peilong/DeepCL,MiniLight/DeepCL,hughperkins/DeepCL,hughperkins/DeepCL,FighterLYL/DeepCL,MiniLight/DeepCL,Peilong/DeepCL,FighterLYL/DeepCL,hughperkins/DeepCL