make izenelib::ir::indexmanager::IndexManagerException::what() also prints std::runtime_error::what().
make izenelib::ir::indexmanager::IndexManagerException::what() also prints std::runtime_error::what().

pombredanne/izenelib,pombredanne/izenelib,izenecloud/izenelib,izenecloud/izenelib,pombredanne/izenelib,pombredanne/izenelib,izenecloud/izenelib,izenecloud/izenelib