Fix SwitchOrderLayer grad bugs by reshape output.grad
Fix SwitchOrderLayer grad bugs by reshape output.grad

luotao1/Paddle,pengli09/Paddle,pengli09/Paddle,Canpio/Paddle,baidu/Paddle,Canpio/Paddle,hedaoyuan/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,putcn/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,tensor-tang/Paddle,tensor-tang/Paddle,reyoung/Paddle,hedaoyuan/Paddle,QiJune/Paddle,tensor-tang/Paddle,QiJune/Paddle,putcn/Paddle,lcy-seso/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,Canpio/Paddle,baidu/Paddle,chengduoZH/Paddle,reyoung/Paddle,jacquesqiao/Paddle,Canpio/Paddle,reyoung/Paddle,jacquesqiao/Paddle,pengli09/Paddle,luotao1/Paddle,lcy-seso/Paddle,QiJune/Paddle,pengli09/Paddle,baidu/Paddle,tensor-tang/Paddle,tensor-tang/Paddle,PaddlePaddle/Paddle,jacquesqiao/Paddle,lcy-seso/Paddle,hedaoyuan/Paddle,putcn/Paddle,luotao1/Paddle,QiJune/Paddle,baidu/Paddle,pkuyym/Paddle,hedaoyuan/Paddle,hedaoyuan/Paddle,chengduoZH/Paddle,Canpio/Paddle,reyoung/Paddle,baidu/Paddle,pkuyym/Paddle,chengduoZH/Paddle,Canpio/Paddle,pkuyym/Paddle,putcn/Paddle,putcn/Paddle,luotao1/Paddle,hedaoyuan/Paddle,pengli09/Paddle,pengli09/Paddle,pkuyym/Paddle,chengduoZH/Paddle,lcy-seso/Paddle,QiJune/Paddle,pengli09/Paddle,hedaoyuan/Paddle,putcn/Paddle,Canpio/Paddle,jacquesqiao/Paddle,reyoung/Paddle,QiJune/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,lcy-seso/Paddle,pkuyym/Paddle,PaddlePaddle/Paddle,chengduoZH/Paddle,jacquesqiao/Paddle,luotao1/Paddle,lcy-seso/Paddle,luotao1/Paddle,hedaoyuan/Paddle