Pull in fixes to support retina display on macOS
Pull in fixes to support retina display on macOS

OpenChemistry/tomviz-superbuild,OpenChemistry/tomviz-superbuild,mathturtle/tomviz-superbuild,cjh1/tomviz-superbuild,cjh1/tomviz-superbuild,mathturtle/tomviz-superbuild