Use shape_of instead of explicitly inserting Shape_i

d3viz: Interactive visualization of Theano compute graphs

Add a 'name' argument to '.copy' method of Theano variables

These Shape_i nodes will not always be optimized away otherwise, and
they prevent local_shape_to_shape_i from being applied.
Instead, we manually apply the equivalent of local_shape_to_shape_i,
by using shape_of[...] directly.

Whitespace needed in theano_vs_c.txt

Fixed the docstring for the scan_opt.

Fix a non-ascii character in a comment in test_flake8.py.

Add some minimal tests for cudnn softmax.

Enable merging of GpuDnnPoolDesc

fix gh-3377 bug introduced by 41a8e89b merged by 7320e1b1. GpuElem…

fix gh-3377 bug introduced by 41a8e89b merged by 7320e1b1. GpuElemwise with non contiguous inputs give bad results

Change default value of reoptimize_unpickled_function

Use the libgpuarray APIs to manage GPU code compilation, execution, etc.

It screwed up the [rendered formatting](http://deeplearning.net/software/theano/extending/theano_vs_c.html).

Use the testcode facility to test code examples directly

All tests pass!