Synchronized external modules as upstream

Now CUDA v7.5 is required, along with new cudnn: cudnn-7.5-linux-ppc64le-v5.0-ga.tgz.

NOTE: GitHub's packaging doesn't include submodules for this tag.

Please proceed as following to get all the file appropriately:

git clone https://github.com/PPC64/torch-distro.git --recursive
cd torch-distro
git checkout v1.1

Or else ./install.sh will not work