Add support for collecting native events with PAPI
The PAPI support in the RTS allows users to collect a group of preset PAPI events (e.g.
PAP_TOT_CYC). However, PAPI can also collect data for native events exposed by the hardware beyond the PAPI present events. The native events supported on your hardware can found by using the
papi_native_avail tool. It would be great if the RTS allows users to collect native events along with the preset events.