stop after all possible orientations were tested in _gen_common_data()
stop after all possible orientations were tested in _gen_common_data()

- new _get_possible_oris()
- apply mesh face permutation also to serendipity basis

vlukes/sfepy,rc/sfepy,vlukes/sfepy,sfepy/sfepy,vlukes/sfepy,BubuLK/sfepy,BubuLK/sfepy,sfepy/sfepy,rc/sfepy,sfepy/sfepy,BubuLK/sfepy,rc/sfepy