posix: upgrade libevent from 1.4.7 to 1.4.13

third_party/libevent/mac/config.h

Index: third_party/libevent/mac/config.h
diff --git a/third_party/libevent/mac/config.h b/third_party/libevent/mac/config.h
index 3742d15b855bc010d145d6684bc7d8eba8593e10..f73f0c63292be44463a745da792d9825bb7e3aa7 100644
--- a/third_party/libevent/mac/config.h
+++ b/third_party/libevent/mac/config.h
@@ -1,3 +1,4 @@
+/* config.h.  Generated from config.h.in by configure.  */
 /* config.h.in.  Generated from configure.in by autoheader.  */
 
 /* Define if clock_gettime is available in libc */
@@ -30,9 +31,18 @@
 /* Define to 1 if you have the <fcntl.h> header file. */
 #define HAVE_FCNTL_H 1
 
+/* Define to 1 if the system has the type `fd_mask'. */
+#define HAVE_FD_MASK 1
+
 /* Define to 1 if you have the `getaddrinfo' function. */
 #define HAVE_GETADDRINFO 1
 
+/* Define to 1 if you have the `getegid' function. */
+#define HAVE_GETEGID 1
+
+/* Define to 1 if you have the `geteuid' function. */
+#define HAVE_GETEUID 1
+
 /* Define to 1 if you have the `getnameinfo' function. */
 #define HAVE_GETNAMEINFO 1
 
@@ -45,6 +55,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1
 
+/* Define to 1 if you have the `issetugid' function. */
+#define HAVE_ISSETUGID 1
+
 /* Define to 1 if you have the `kqueue' function. */
 #define HAVE_KQUEUE 1
 
@@ -229,7 +242,7 @@
 #define TIME_WITH_SYS_TIME 1
 
 /* Version number of package */
-#define VERSION "1.4.7-stable"
+#define VERSION "1.4.13-stable"
 
 /* Define to appropriate substitue if compiler doesnt have __func__ */
 /* #undef __func__ */