rnn: Support inheriting varsets.
rnn: Support inheriting varsets.

karolherbst/envytools,MoochMcGee/envytools,karolherbst/envytools,kfractal/envytools,karolherbst/envytools,pierremoreau/envytools,kfractal/envytools,grate-driver/envytools,hakzsam/envytools,MoochMcGee/envytools,MoochMcGee/envytools,envytools/envytools,pierremoreau/envytools,pierremoreau/envytools,pierremoreau/envytools,kfractal/envytools,pierremoreau/envytools,grate-driver/envytools,envytools/envytools,MoochMcGee/envytools,grate-driver/envytools,kfractal/envytools,hakzsam/envytools,MoochMcGee/envytools,envytools/envytools,envytools/envytools,hakzsam/envytools,karolherbst/envytools,grate-driver/envytools,hakzsam/envytools,karolherbst/envytools,kfractal/envytools,grate-driver/envytools,hakzsam/envytools,envytools/envytools