fix and update process_conf() in SchurGeneralized and SchurComplement
fix and update process_conf() in SchurGeneralized and SchurComplement

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