replay: Add a --loop option to repeatedly loop over the final frame
replay: Add a --loop option to repeatedly loop over the final frame

This can be useful for repeatedly exercising the driver with the
operations of a single frame.

schulmar/apitrace,joshua5201/apitrace,PeterLValve/apitrace,schulmar/apitrace,trtt/apitrace,surround-io/apitrace,swq0553/apitrace,tuanthng/apitrace,surround-io/apitrace,EoD/apitrace,trtt/apitrace,PeterLValve/apitrace,swq0553/apitrace,EoD/apitrace,apitrace/apitrace,apitrace/apitrace,apitrace/apitrace,joshua5201/apitrace,swq0553/apitrace,PeterLValve/apitrace,schulmar/apitrace,trtt/apitrace,joshua5201/apitrace,joshua5201/apitrace,joshua5201/apitrace,tuanthng/apitrace,schulmar/apitrace,surround-io/apitrace,schulmar/apitrace,EoD/apitrace,apitrace/apitrace,trtt/apitrace,surround-io/apitrace,swq0553/apitrace,tuanthng/apitrace,swq0553/apitrace,trtt/apitrace,tuanthng/apitrace,EoD/apitrace,surround-io/apitrace,EoD/apitrace,PeterLValve/apitrace,tuanthng/apitrace