use argparse instead of optparse in phonon.py
use argparse instead of optparse in phonon.py

BubuLK/sfepy,rc/sfepy,vlukes/sfepy,rc/sfepy,sfepy/sfepy,BubuLK/sfepy,sfepy/sfepy,BubuLK/sfepy,lokik/sfepy,vlukes/sfepy,rc/sfepy,vlukes/sfepy,sfepy/sfepy,lokik/sfepy,lokik/sfepy,lokik/sfepy