renderPM.py: backward compatibility fix for _renderPM version <=0.98
renderPM.py: backward compatibility fix for _renderPM version <=0.98

Distrotech/reportlab,Distrotech/reportlab,Distrotech/reportlab,kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,Distrotech/reportlab,kanarelo/reportlab,Distrotech/reportlab