hom: clean-up of homogen.py, volume can be given by value
hom: clean-up of homogen.py, volume can be given by value

RexFuzzle/sfepy,BubuLK/sfepy,lokik/sfepy,RexFuzzle/sfepy,lokik/sfepy,lokik/sfepy,sfepy/sfepy,rc/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,sfepy/sfepy,vlukes/sfepy,BubuLK/sfepy,vlukes/sfepy,RexFuzzle/sfepy,olivierverdier/sfepy,BubuLK/sfepy,lokik/sfepy,olivierverdier/sfepy,olivierverdier/sfepy,RexFuzzle/sfepy,sfepy/sfepy