update linear direct solvers: new scipy_superlu, scipy_umfpack
update linear direct solvers: new scipy_superlu, scipy_umfpack

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