posix: upgrade libevent from 1.4.7 to 1.4.13

third_party/libevent/Makefile.am

Index: third_party/libevent/Makefile.am
diff --git a/third_party/libevent/Makefile.am b/third_party/libevent/Makefile.am
index 0176d67cb368ffd97f823638b9fea00c9fd61d14..dc78ef175a5f0b7bb4aa82e86fb498efc91390f5 100644
--- a/third_party/libevent/Makefile.am
+++ b/third_party/libevent/Makefile.am
@@ -29,13 +29,14 @@ RELEASE = 1.4
 #  Libevent 1.4.1 was 2:0:0
 #  Libevent 1.4.2 should be 3:0:0
 #  Libevent 1.4.5 is 3:0:1 (we forgot to increment in the past)
-VERSION_INFO = 3:1:1
+VERSION_INFO = 3:3:1
 
 bin_SCRIPTS = event_rpcgen.py
 
 EXTRA_DIST = autogen.sh event.h event-internal.h log.h evsignal.h evdns.3 \
 	evrpc.h evrpc-internal.h min_heap.h \
 	event.3 \
+	Doxyfile \
 	kqueue.c epoll_sub.c epoll.c select.c poll.c signal.c \
 	evport.c devpoll.c event_rpcgen.py \
 	sample/Makefile.am sample/Makefile.in sample/event-test.c \
@@ -43,8 +44,9 @@ EXTRA_DIST = autogen.sh event.h event-internal.h log.h evsignal.h evdns.3 \
 	test/Makefile.am test/Makefile.in test/bench.c test/regress.c \
 	test/test-eof.c test/test-weof.c test/test-time.c \
 	test/test-init.c test/test.sh \
-	compat/sys/queue.h compat/sys/_time.h \
+	compat/sys/queue.h compat/sys/_libevent_time.h \
 	WIN32-Code/config.h \
+	WIN32-Code/event-config.h \
 	WIN32-Code/win32.c \
 	WIN32-Code/tree.h \
 	WIN32-Prj/event_test/event_test.dsp \
@@ -104,7 +106,9 @@ libevent_extra_la_SOURCES = $(EXTRA_SRC)
 libevent_extra_la_LIBADD = @LTLIBOBJS@ $(SYS_LIBS)
 libevent_extra_la_LDFLAGS = -release $(RELEASE) -version-info $(VERSION_INFO)
 
-include_HEADERS = event.h evhttp.h evdns.h evrpc.h evutil.h event-config.h
+include_HEADERS = event.h evhttp.h evdns.h evrpc.h evutil.h
+
+nodist_include_HEADERS = event-config.h
 
 INCLUDES = -I$(srcdir)/compat $(SYS_INCLUDES)