pmdaproc.sh - rotate PMDA log files before starting a PMDA
pmdaproc.sh - rotate PMDA log files before starting a PMDA

This change ensures a PMDA launched from one of the Install
scripts and PMDA's launched by pmcd at startup from the
$PCP_RC_DIR/pmcd script both rotate old PMDA logfiles from
<name>.log to <name>.log.prev.

Since the non-root pmcd changes this is more important as
<name>.log may be owned by root, but the new PMDA may be running
as the user "pcp" and unable to overwrite an existing <name>.log,
which was causing the PMDA's log to be spliced into pmcd.log.

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