The files that you listed only exist in 10.0. The migration checklist suggests that you make a backup of them before you migrate to 10.1. There are a couple of reasons for this. You might want to apply these files if you decide to roll back to 10.0. You can also use them as a reference when setting properties on your new 10.1 services, since you must republish all services at 10.1.
The 10.1 equivalent of these files is the "configuration store", although you should not edit the configuration store files manually.
Sterling