pmlogger - fix small race on exit condition
pmlogger - fix small race on exit condition

Flush stdio buffers before removing control file(s).

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