Supprt log scale forward and backward computation of cpu.
Supprt log scale forward and backward computation of cpu.

hvy/chainer,keisuke-umezawa/chainer,muupan/chainer,cupy/cupy,cupy/cupy,jnishi/chainer,wkentaro/chainer,t-abe/chainer,AlpacaDB/chainer,muupan/chainer,kiyukuta/chainer,aonotas/chainer,sinhrks/chainer,chainer/chainer,wkentaro/chainer,niboshi/chainer,jnishi/chainer,delta2323/chainer,chainer/chainer,truongdq/chainer,kikusu/chainer,okuta/chainer,benob/chainer,hvy/chainer,kikusu/chainer,rezoo/chainer,AlpacaDB/chainer,okuta/chainer,okuta/chainer,ronekko/chainer,pfnet/chainer,ktnyt/chainer,keisuke-umezawa/chainer,ktnyt/chainer,chainer/chainer,sinhrks/chainer,niboshi/chainer,truongdq/chainer,t-abe/chainer,ktnyt/chainer,keisuke-umezawa/chainer,cemoody/chainer,chainer/chainer,hvy/chainer,jnishi/chainer,cupy/cupy,keisuke-umezawa/chainer,ysekky/chainer,benob/chainer,jnishi/chainer,anaruse/chainer,hvy/chainer,wkentaro/chainer,cupy/cupy,okuta/chainer,tkerola/chainer,kashif/chainer,niboshi/chainer,niboshi/chainer,wkentaro/chainer,ktnyt/chainer