cli: Pass apitrace path to tracediff.sh.
cli: Pass apitrace path to tracediff.sh.

So that it works automatically from the build directory too.

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