added SciPy direct sparse solvers (ls.scipy_direct) - unified umfpack, superlu
added SciPy direct sparse solvers (ls.scipy_direct) - unified umfpack, superlu

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