Halide gridder adjustments
Halide gridder adjustments

Do not have two separate update definitions, actually give a strategy
for the update definition, and give as much information as possible
about the lower dimensions of input & output so the vectoriser actually
has something to work with.

SKA-ScienceDataProcessor/RC,SKA-ScienceDataProcessor/RC,SKA-ScienceDataProcessor/RC,SKA-ScienceDataProcessor/RC,SKA-ScienceDataProcessor/RC