code cleanup

Remove duplicate code, it is done in the imported test_basic_op

New backend: GpuCrossentropySoftmaxArgmax1HotWithBias, GpuCrossentropySoftmax1HotWithBiasDx

Remove duplicate computation and compilation.

Fix the final stuff.

As a side effect don't always loop over user provided cxx flags always when it contain march.

Make DebugMode raise a better error when an optimization insert an op

Py24

Fix gradient of split when there are disconnected outputs

This should fix gh-1589

Scipy 0.13 (needed for the release)

It used to support ndarray of 2 elements for idx, now it ask for a tuple.

Make Theano use the proper path on Windows with Canopy installed for all users.
Mark ProfileMode as deprecated in the docs and document config.profile.

Implement may_share_memory for GpuArray.

This is needed to have debugmode to don't uselessly warn about op that
declared to be inplace but didn't.

Vdumoulin new backend