Allow control variable access in the fetchcallback even if papi is not running
Allow control variable access in the fetchcallback even if papi is not running

Also fix a small issue in papi_store for papi.control.disable, we shouldn't
return PM_ERR_CONV if it's the first metric we compare against.

*src/pmdas/papi/papi.c

edwardt/pcp,aeg-aeg/pcpfans,edwardt/pcp,mbaldessari/pcp,aeg-aeg/pcpfans,tjanez/pcp,mbaldessari/pcp,adfernandes/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,mbaldessari/pcp,tjanez/pcp,edwardt/pcp,tjanez/pcp,wuliming/pcp,tjanez/pcp,andyvand/cygpcpfans,wuliming/pcp,adfernandes/pcp,prasincs/pcp,tjanez/pcp,mbaldessari/pcp,andyvand/cygpcpfans,wuliming/pcp,mbaldessari/pcp,wuliming/pcp,prasincs/pcp,andyvand/cygpcpfans,adfernandes/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,andyvand/cygpcpfans,aeg-aeg/pcpfans,wuliming/pcp,prasincs/pcp,prasincs/pcp,wuliming/pcp,tjanez/pcp,aeg-aeg/pcpfans,aeg-aeg/pcpfans,edwardt/pcp,aeg-aeg/pcpfans,adfernandes/pcp,prasincs/pcp,andyvand/cygpcpfans,wuliming/pcp,tjanez/pcp,edwardt/pcp,edwardt/pcp,prasincs/pcp,tjanez/pcp,adfernandes/pcp,edwardt/pcp,adfernandes/pcp,prasincs/pcp,aeg-aeg/pcpfans,edwardt/pcp,adfernandes/pcp,adfernandes/pcp,prasincs/pcp,mbaldessari/pcp,wuliming/pcp