update setup.py to show names and versions of dependencies at the end
update setup.py to show names and versions of dependencies at the end

- new check_versions()

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