initial check-in, version 0.5.0

src/linux/epoll_ctl.c

@@ -0,0 +1,7 @@
+#include <sys/epoll.h>
+#include "syscall.h"
+
+int epoll_ctl(int fd, int op, int fd2, struct epoll_event *ev)
+{
+	return syscall4(__NR_epoll_ctl, fd, op, fd2, (long)ev);
+}