Numpydoc sandbox 1

Correct config.lib.cnmem name in documentation

Prevent ScanSaveMem from creating 0-steps scans.

Fix most warnings and errors in the doc.

make MergeOptimizer merge nodes with assert input

Disable the optimization to use DnnSoftmaxGrad for cuDNN v3 since it …

Disable the optimization to use DnnSoftmaxGrad for cuDNN v3 since it is broken for (n, c 1, 1) shapes at the moment.

Average pooling

Fix buildbot

Make broadcast fixup in filter_variable() depend on an argument and stop doing it for shared variables.

Add an :orphan: tag to documents that are not in the toctree so that sphinx doesn't complain anymore.

The inner loop that would update the broadcastable pattern according
to the rebroadcast dict would overwrite the idx extracted from the
Subtensor, thus always selecting the last dim.

Also match Windows version of paths

This should fix unhelpful stack traces on Windows.