Clean up printing of empty trees
Clean up printing of empty trees

mchf/augeas,manandbytes/augeas,kumy/augeas,dafugg/augeas,GeoffWilliams/augeas,ptoscano/augeas,camptocamp/augeas,hercules-team/augeas-do-not-use,hercules-team/augeas,manandbytes/augeas,mlichvar/augeas,raphink/augeas,pevalme/augeas,mchf/augeas,camptocamp/augeas,bkearney/augeas,mlichvar/augeas,dafugg/augeas,jjlin/augeas,pevalme/augeas,bkearney/augeas,raphink/augeas,jjlin/augeas,jasperla/augeas,MikaelSmith/augeas,dafugg/augeas,ptoscano/augeas,hercules-team/augeas-do-not-use,jasperla/augeas,jjlin/augeas,hercules-team/augeas,lutter/augeas,hercules-team/augeas-do-not-use,bkearney/augeas,kunkku/augeas,MikaelSmith/augeas,lutter/augeas,pevalme/augeas,kumy/augeas,bkearney/augeas,mlichvar/augeas,domcleal/augeas,lutter/augeas,camptocamp/augeas,ptoscano/augeas,kumy/augeas,kunkku/augeas,jtopjian/augeas,domcleal/augeas,kunkku/augeas,jtopjian/augeas,camptocamp/augeas,kumy/augeas,domcleal/augeas,GeoffWilliams/augeas