move libevent into base

base/third_party/libevent/epoll_sub.c

 /*
  * Copyright 2003 Niels Provos <provos@citi.umich.edu>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 32 matching lines @@
 {
 
         return (syscall(__NR_epoll_ctl, epfd, op, fd, event));
 }
 
 int
 epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout)
 {
         return (syscall(__NR_epoll_wait, epfd, events, maxevents, timeout));
 }