Added some tests; fix String wrt the new handling of empty (turn all empty things to empty strings, not None)
Added some tests; fix String wrt the new handling of empty (turn all empty things to empty strings, not None)

formencode/formencode,formencode/formencode,systemctl/formencode,jvanasco/formencode,genixpro/formencode,systemctl/formencode,systemctl/formencode,jvanasco/formencode,genixpro/formencode,jvanasco/formencode,formencode/formencode,genixpro/formencode