Add tests of Linear with spatial inputs
Add tests of Linear with spatial inputs

keisuke-umezawa/chainer,keisuke-umezawa/chainer,kuwa32/chainer,truongdq/chainer,hvy/chainer,delta2323/chainer,hidenori-t/chainer,ronekko/chainer,chainer/chainer,aonotas/chainer,t-abe/chainer,minhpqn/chainer,niboshi/chainer,tigerneil/chainer,cupy/cupy,niboshi/chainer,keisuke-umezawa/chainer,AlpacaDB/chainer,jnishi/chainer,muupan/chainer,kashif/chainer,ytoyama/yans_chainer_hackathon,tkerola/chainer,rezoo/chainer,wkentaro/chainer,niboshi/chainer,truongdq/chainer,1986ks/chainer,sou81821/chainer,laysakura/chainer,ysekky/chainer,ktnyt/chainer,okuta/chainer,yanweifu/chainer,anaruse/chainer,pfnet/chainer,niboshi/chainer,hvy/chainer,sinhrks/chainer,ktnyt/chainer,elviswf/chainer,wkentaro/chainer,jnishi/chainer,tereka114/chainer,benob/chainer,woodshop/complex-chainer,Kaisuke5/chainer,jnishi/chainer,t-abe/chainer,kiyukuta/chainer,jnishi/chainer,ktnyt/chainer,chainer/chainer,wkentaro/chainer,muupan/chainer,ikasumi/chainer,ktnyt/chainer,kikusu/chainer,hvy/chainer,bayerj/chainer,chainer/chainer,AlpacaDB/chainer,sinhrks/chainer,umitanuki/chainer,okuta/chainer,woodshop/chainer,cupy/cupy,wavelets/chainer,cupy/cupy,cupy/cupy,tscohen/chainer,jfsantos/chainer,okuta/chainer,masia02/chainer,kikusu/chainer,cemoody/chainer,benob/chainer,wkentaro/chainer,hvy/chainer,chainer/chainer,keisuke-umezawa/chainer,okuta/chainer