Fix broken blas flags on Anaconda with openblas.

Fix allow_downcast on gpuarray

Don't use CorrMM when there is no c compiler (no perform, it will fal…

[DOC, ENH] allow to use gdb with nvcc. Doc how to use gdb

Don't use CorrMM when there is no c compiler (no perform, it will fallback to the old conv that have perform)

Fix opt warning/not moving to GPU some node.

Issue  #3429 - refactor some code to python 'with' statement

added comments to logistic regression example in the documentation

Bug fix: don't try to os.mkdirs on an empty directory

Fixed import of local pool submodule

Disable average_exc_pad pooling for cudnn v3

Update opt.py

Remove more warnings from the buildbot

See #3776

Renamed max_pool_2d to pool_2d and  DownsampleFactorMax to Pool

Fix blas detection on mac.