adding faster batch-bias kernel
adding faster batch-bias kernel

rotmanmi/cunn,danielsig727/cunn,Aysegul/cunn,Saulzar/cunn,lukasc-ch/cunn,davidBelanger/cunn,apaszke/cunn,soumith/cunnsparse,fmassa/cunn,hughperkins/cunn,apaszke/cunn,lukasc-ch/cunn,albanD/cunn,clementfarabet/cunn,jonathantompson/cunn,ominux/cunn,colesbury/cunn,jhjin/cunn,clementfarabet/cunn,jonathantompson/cunn,colesbury/cunn,szagoruyko/cunn,ml-lab/cunn,andreaskoepf/cunn,szagoruyko/cunn,jhjin/cunn,davidBelanger/cunn,colesbury/cunn,andreaskoepf/cunn,rotmanmi/cunn,apaszke/cunn