Polling file descriptors

int evl_new_poll(void)


int evl_add_pollfd(int efd, int newfd, unsigned int events)


int evl_del_pollfd(int efd, int delfd)


int evl_mod_pollfd(int efd, int modfd, unsigned int events)


int evl_timedpoll(int efd, struct evl_poll_event *pollset, int nrset, struct timespec *timeout)


int evl_poll(int efd, struct evl_poll_event *pollset, int nrset)