src/pmcd/src/pmcd.c: tweak earlier fix for opening log
src/pmcd/src/pmcd.c: tweak earlier fix for opening log

Need to explicitly call __pmSetProgname() before calling __pmOpenLog()
because pmProgname is needed in the log file header line.  Previously
we were calling __pmOpenLog() after the command line arguments had
been parsed and __pmSetProgname() is called as a side-effect there.

adfernandes/pcp,wuliming/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,adfernandes/pcp