Support Caffe ScaleLayer.
Support Caffe ScaleLayer.

wkentaro/chainer,ktnyt/chainer,keisuke-umezawa/chainer,kashif/chainer,ktnyt/chainer,hvy/chainer,kikusu/chainer,wkentaro/chainer,wkentaro/chainer,benob/chainer,pfnet/chainer,hvy/chainer,aonotas/chainer,hvy/chainer,keisuke-umezawa/chainer,niboshi/chainer,tkerola/chainer,okuta/chainer,cupy/cupy,hvy/chainer,keisuke-umezawa/chainer,jnishi/chainer,niboshi/chainer,rezoo/chainer,ktnyt/chainer,kiyukuta/chainer,wkentaro/chainer,anaruse/chainer,okuta/chainer,okuta/chainer,ronekko/chainer,delta2323/chainer,kikusu/chainer,ktnyt/chainer,benob/chainer,niboshi/chainer,cupy/cupy,jnishi/chainer,chainer/chainer,jnishi/chainer,chainer/chainer,niboshi/chainer,chainer/chainer,keisuke-umezawa/chainer,okuta/chainer,ysekky/chainer,cupy/cupy,chainer/chainer,jnishi/chainer,cupy/cupy