removing some bugs in sgd.py
adding changes to the sgd.py
updating mlp.py
removing comment
updating mlp.py
Merge pull request #209 from goodfeli/master

better organization of MLP costs
adding test_units
removing comment
Merge pull request #210 from goodfeli/master

Add SoftmaxRegression convenience class, update tutorials
Merge pull request #211 from goodfeli/master

rectifiers, inverse softmax
Merge pull request #212 from goodfeli/master

Better handling of abstract datasets
removed debugging print
new MatrixMul
Merge remote-tracking branch 'sina/my_branch' into merge_sina

Conflicts:
	pylearn2/models/mlp.py
	pylearn2/training_algorithms/tests/test_sgd.py
fixed wrong variable name Sina's PR introduced to LinearDecay
added a TODO to test LinearDecay, since presumably it had the same
problem as LinearDecayOverEpoch
Merge pull request #213 from goodfeli/merge_sina

Fixes to sgd.py, courtesy of Sina
TODO
names of tutorials
clarified TODO
factored dropout into a cost