libpcp_pmcd/trace.c - use __pmSockAddrToString
libpcp_pmcd/trace.c - use __pmSockAddrToString

Much cleaner implementation for printing an IP addr (of any type).

Thanks to Dave Brolley for the hint and patch that is the basis
for this commit.

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