pmGetConfig - handle values with quotes
pmGetConfig - handle values with quotes

Need to handle quotes here and strip 'em before pushing values into
the environment in the one-trip case that loads up the environment from
/etc/pcp.conf or $PCP_CONF.

Found when making PCP_AWK_PROG="gawk --posix".

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