Fstab: map comments and support empty lines
Fstab: map comments and support empty lines

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