void session_apply_setting(struct session *se, const char *dbname,
const char *setting, const char *value);
const char *session_setting_oneval(struct session_database *db, int offset);
void session_apply_setting(struct session *se, const char *dbname,
const char *setting, const char *value);
const char *session_setting_oneval(struct session_database *db, int offset);