pmrep: fix csv output format
pmrep: fix csv output format

Update pmrep's csv output format so that both LibreOffice and
sheet2pcp can parse it without issues. Tested with Python 2 /
Python 3.

Let's consider using the standard csv module in the future.

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