some extra verbose prints in gpu conv code.

Cache

add the theano flags cmodule.warn_no_version to print warning when c_code_cache_version is not implemented.

Argsort numpy wrapping

Gpu stuff

This affect all the function that call this inner function.

Check that Alloc nodes are not inserted during opt

Gpu setsubtensor

This is needed for GpuAdvancedIncSubetensor1

making the subtensor merge optimization work