Misc fixes

Fix mask 101 GPU support in GpuCAReduce

Fix compilation crash

is from the clients.

Crash cache c scalar

Correctly remove the internal theano trace. As we return only 1 level…

conv2d support uint

Release the GIL in the new back-end to allow multi-threads computation.

Doc for the new type of profiling added.

Testing the output shape

Correctly remove the internal theano trace. As we return only 1 level to the user, this made us return useless information.

Fix get_conv_output_shape for symbolic input

one ctx async 3.349727
two ctx async 1.713157
two ctx, 2 fct async 1.717468
two ctx, 2 fct with transfer 3.635517
two ctx, 2 fct async, 2 threads 1.731599
two ctx, 2 fct with transfer, 2 threads 2.071597

Fix call to gpu_from_host

always consider them, not just when we generate the c code.

fix gh-3693

Fix not using context_name in local_gpu_elemwise