Norm

Function copy

Replace subtensors on broadcastable dimensions with DimShuffle

Make stack trace tests in `tensor/tests/test_opt.py` use `check_stack_trace`.

changed check_stack_trace to first check for ops or tuple of ops before __call__ attribute, because classes have a call attribute (constructor).

added length check in check_stack_trace. This change causes 31 failures in tensor/tests/test_opt.py, most seem to be due to MergeOptimizer.

Modified test_opt.py to use check_stack_trace and modified check_stack_trace to loop over outputs for ops_to_check=last and some refactoring

test using theano tile added

Changed function.copy to ignore unused inputs after deleting updates.
Added test to make sure copy ignores unused inputs.

Convert gpucumsum

fix issue 4303 : reshaping part

Disable python_constant_folding for GpuElemwise.

Hostname printout in do_nightly_build

Opt CpuContiguous -> GpuContiguous and add CpuContiguous.ard

Blocksparse for gpuarray