fix AutoFallbackSolver.__new__() to use the original solver configuration
fix AutoFallbackSolver.__new__() to use the original solver configuration

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