fix tests/test_linearization.py for installation
fix tests/test_linearization.py for installation

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