glretrace: Improved support for GPUs which have GL_ARB_timer_query but not the EXT version.
glretrace: Improved support for GPUs which have GL_ARB_timer_query but not the EXT version.

This also uses ARB query for occlusion as this is an ARB not an EXT
extension.

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