Use THCState in LogSigmoid.
Use THCState in LogSigmoid.

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