hierarchic: script/save_basis.py: require output directory
hierarchic: script/save_basis.py: require output directory

- print help by default

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