Remove call to GpuKernel_init with binary

As it is trying over and over to compile it as source.
Also, start removing generation of binaries from Theano.

Disk cache option for gpuarray

Implement new op param type `EnumType`

preallocate with a direct call.

Updated numpy as np #4218

Fix memory leak

Remove the old backend and all of its tentacles

It seems sphinx 1.5.1 is not available for Python 3.3.

Updated numpy as np #4218