new which option instead of hard-coded value in ScipyEigenvalueSolver
new which option instead of hard-coded value in ScipyEigenvalueSolver

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