Although local scope variables inside the kernel are less common in
SYCL, they can happen with hierarchical.

This fixes the problem by adding a pass to replace the local scope variables
which start life as globals with a struct which is allocated on the
stack.

Additionally, this required updating of the code which renames and removes
kernel based on wrappers and vecz success. To simplify this we run the
OCK utility pass TransferKernelMetadata which adds metadata to store
the original kernel name. This in turn simplifies this code significantly.

… test