Merged requested to merge kmorel/vtk-m:group-vec-variable-cont-portal into master
Previously you could not get an array portal for ArrayHandleGroupVecVariable in the control environment. This change allows you to get portals in the control environment.
Also made some changes to printSummary_ArrayHandle that allows you to print ArrayHandleGroupVecVariable and other arrays with strange values. Also using this to add some diagnostics to the fancy array handle testing.