posix: upgrade libevent from 1.4.7 to 1.4.13

third_party/libevent/test/bench.c

Index: third_party/libevent/test/bench.c
diff --git a/third_party/libevent/test/bench.c b/third_party/libevent/test/bench.c
index 48fd32a925847cc4875ae098b912720bcea7c739..c976932fa806c087d0310a0a913b5283c6dabc39 100644
--- a/third_party/libevent/test/bench.c
+++ b/third_party/libevent/test/bench.c
@@ -44,7 +44,7 @@
 #include <windows.h>
 #else
 #include <sys/socket.h>
-#include <sys/signal.h>
+#include <signal.h>
 #include <sys/resource.h>
 #endif
 #include <fcntl.h>
@@ -63,12 +63,10 @@ static int *pipes;
 static int num_pipes, num_active, num_writes;
 static struct event *events;
 
-
-
 static void
 read_cb(int fd, short which, void *arg)
 {
-	int idx = (int) arg, widx = idx + 1;
+	long idx = (long) arg, widx = idx + 1;
 	u_char ch;
 
 	count += read(fd, &ch, sizeof(ch));
@@ -84,7 +82,8 @@ read_cb(int fd, short which, void *arg)
 static struct timeval *
 run_once(void)
 {
-	int *cp, i, space;
+	int *cp, space;
+	long i;
 	static struct timeval ts, te;
 
 	for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {