Better support for multiple eventsets and multiple devices. #727

Job	Run time
papi_component_amd (rocm, yes)	6m 59s
papi_clang_analysis	6m 51s
papi_component_nvidia (cuda, yes)	1m 16s
papi_component_amd (rocm, no)	6m 2s
papi_component (perf_event, yes)	12m 44s
papi_component_nvidia (cuda, no)	1m 5s
papi_component_amd (rocm_smi, yes)	6m 5s
papi_component (perf_event, no)	10m 19s
papi_spack	10m 13s
papi_component_nvidia (nvml, yes)	6m 20s
papi_component_amd (rocm_smi, no)	5m 35s
papi_component (lmsensors, yes)	8m 1s
papi_component_nvidia (nvml, no)	5m 53s
papi_component (lmsensors, no)	7m 21s
papi_component (io, yes)	12m 10s
papi_component (io, no)	7m 28s
papi_component (net, yes)	7m 34s
papi_component (net, no)	10m 10s
papi_component (powercap, yes)	11m 19s
papi_component (powercap, no)	10m 59s
papi_component (appio, yes)	11m 48s
papi_component (appio, no)	7m 51s
papi_component (coretemp, yes)	8m 22s
papi_component (coretemp, no)	10m 41s
papi_component (stealtime, yes)	12m 30s
papi_component (stealtime, no)	6m 59s
	3h 32m 35s

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