script/save_basis.py: make sure that output directory exists
script/save_basis.py: make sure that output directory exists

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