Move helpers around & fix UnzipArrays so that it rewrites progResults
Overhaul of ToCLike.  Partway there.  Everything downstream from that is incomplete/deactivated
Finish up ToCLike (for now) and add TODOs + a new helper (simpleBlockToExp)
Updating GPUIR.  Updating stride and metadata.  Fix UnzipEtups so it unzips the stride metadata too.