dispersion_analysis.py: new --define-kwargs option, update assemble_matrices()
dispersion_analysis.py: new --define-kwargs option, update assemble_matrices()

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