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.

python 3 fix in dnn.py

In python 3, map returns a map object iterator rather than a list, which here gets consumed by min, leaving pad_desc empty.
This bug was just introduced with the update to cudnn v3.

Make pydotprint work with pydot_ng

The problematic line was "if not pydot_imported:",
try/except statements are OK

This is necessary to work on Windows, and for Python 3

Exempt np.random.mtrand.RandomState from NaN/inf/big_number checking in NanGuardMode.

enable dots in section names

Fix time_once and guess_once CuDNN options

Config parameters in CUDNN v3 have more than one hierarchy level
(i.e.dnn.conv.algo_fwd). This patch allows to override these values
within .theanorc