Adds clean, working, original copy of files and dependencies mentioned in
DBN tutorial at deeplearning.net/tutorial

MNIST Dataset:
deeplearning.net/data/mnist/mnist.pkl.gz

Deep Belief Network:
deeplearning.net/tutorial/code/DBN.py

MultiLayer Perceptron:
deeplearning.net/tutorial/code/mlp.py

Restricted Boltzmann Machine:
deeplearning.net/tutorial/code/rbm.py

Utilities:
deeplearning.net/tutorial/code/utils.py

Logistic Regression Sample Code:
deeplearning.net/tutorial/code/logistic_sgd.py
Merge branches 'master' and 'DBN_Theano_Clean_Original'