Smaller tolerance in BatchNorm test
Smaller tolerance in BatchNorm test

tkerola/chainer,chainer/chainer,jnishi/chainer,ktnyt/chainer,wkentaro/chainer,jnishi/chainer,ktnyt/chainer,hvy/chainer,jnishi/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,hvy/chainer,okuta/chainer,keisuke-umezawa/chainer,okuta/chainer,ktnyt/chainer,pfnet/chainer,okuta/chainer,wkentaro/chainer,chainer/chainer,niboshi/chainer,wkentaro/chainer,niboshi/chainer,chainer/chainer,hvy/chainer,wkentaro/chainer,niboshi/chainer,okuta/chainer,niboshi/chainer,hvy/chainer,ktnyt/chainer,jnishi/chainer,keisuke-umezawa/chainer,chainer/chainer