Move PAPI_event_info_t var into papi_info for metric descriptions
Move PAPI_event_info_t var into papi_info for metric descriptions

By moving the PAPI_event_info_t varible into the papi_info struct
we can ensure the references to the descriptions are persistent.

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