removes old model_paths assignment
Merge branch 'master' into features/adds-option-parsing
Generalize DBMSticher to  N RBMs, rename it RBMSticher
Revert CD's positive phase to be like VariationalPCD's positive phase
Fix a bug in TransformerDataset

The bug prevented TransformerDataset chaining since a TransformerDataset has no
'y' attribute, so if a TransformerDataset has another TransformerDataset as its
raw_dataset, its has_target() method returns by calling its raw_dataset's
has_target() method.
thanks!
Fix a bug in Softmax's make_symbolic_state method
Restric DBMSampler to DBMs with one hidden layer (for now)
Merge pull request #331 from haarts/features/adds-option-parsing

Features/adds option parsing
Merge branch 'master' of github.com:lisa-lab/pylearn2
added DBM.reconstruct
Merge pull request #332 from goodfeli/master

DBM.reconstruct
stochastic max pool theano graph version added
stochastic pool gpu op added
added test for theano graph stochastic max pool
added test for theano graph stochastic max pool
tests cleaun up
One-hot/k-hot matrices and tests.
Fix metadata + imports.
Utilities for enumerating bit strings.