rename _save_normals() -> _save_vectors(), update
rename _save_normals() -> _save_vectors(), update

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