Merge pull request #1025 from AlassaneNdiaye/fix__test_pool.py

Fixes to the script pylearn2/sandbox/cuda_convnet/tests/test_pool.py
Correct file paths
Merge pull request #1027 from madisonmay/mlp_tutorial

Correct file paths for multilayer_perceptron tutorial
change cuda_convnet to use cublas_v2 as now Theano use this version!
convert tab to space.
Merge pull request #1029 from nouiz/cublas_v2

[Update Pylearn2 to work with dev version of Theano] Cublas v2
Added to the doc, some shape restriction.
Merge pull request #1031 from nouiz/doc

Added to the doc, some shape restriction.