pmmgr: handle case of pm{ie,logger} daemon that refuses SIGTERM
pmmgr: handle case of pm{ie,logger} daemon that refuses SIGTERM

In rare cases, it appears possible for a signal to a child
pmie/pmlogger process to be lost, when the pmmgr_daemon dtor wants
to kill it.  Like pm*_daily.sh, be assertive with a later SIGKILL,
and don't wait forever.

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