gltrace: Don't override GetIntegerv(NUM_EXTENSIONS)/GetStringi(EXTENSIONS) on 2.x contexts.
gltrace: Don't override GetIntegerv(NUM_EXTENSIONS)/GetStringi(EXTENSIONS) on 2.x contexts.

These functions are not legal there, so it's quite confusing for Apitrace
to append its extensions when that happens.

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