simplify make_function() even more - single eval_einsum()
simplify make_function() even more - single eval_einsum()

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