mwinimport dumps core when given an unknown parameter
bbrick@RedQueen:~/workspace/OpenMW/build$ ./mwiniimport --version terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injectorboost::program_options::unknown_option >' what(): unknown option version Aborted (core dumped)
(RM-826 from redmine: created on 2013-06-26 by bret curtis, , closed on 2013-06-26 by Michał Bień)