Add keyword to compressed large structure read/write tests
Add keyword to compressed large structure read/write tests

tbeu/matio,tbeu/matio,NJannasch/matio,MaartenBent/matio,tbeu/matio,MaartenBent/matio,NJannasch/matio,tbeu/matio,MaartenBent/matio,MaartenBent/matio