Add libevent BUILD

Change-Id: I679803cbf9553d3785498020fb0c3d089c9de987
diff --git a/third_party/libevent/BUILD b/third_party/libevent/BUILD
new file mode 100644
index 0000000..7c3fc10
--- /dev/null
+++ b/third_party/libevent/BUILD
@@ -0,0 +1,52 @@
+licenses(['notice'])
+
+cc_library(
+  name = 'libevent',
+  visibility = ['//visibility:public'],
+  srcs = [
+    'select.c',
+    'poll.c',
+    'epoll.c',
+    'signal.c',
+
+    'event.c',
+    'evthread.c',
+    'buffer.c',
+    'bufferevent.c',
+    'bufferevent_sock.c',
+    'bufferevent_filter.c',
+    'bufferevent_pair.c',
+    'listener.c',
+    'bufferevent_ratelim.c',
+    'evmap.c',
+    'log.c',
+    'evutil.c',
+    'evutil_rand.c',
+    'strlcpy.c',
+
+    'event_tagging.c',
+    'http.c',
+    'evdns.c',
+    'evrpc.c',
+
+    'evthread_pthread.c',
+
+    'include/event2/event-config.h',
+
+    #'compat/sys/queue.h',
+  ] + glob([
+    '*-internal.h',
+  ]),
+  hdrs = [
+    'event.h',
+    'evhttp.h',
+    'evdns.h',
+    'evrpc.h',
+    'evutil.h',
+  ],
+  includes = ['.', 'include'],
+  copts = [
+    '-Ithird_party/libevent/compat',
+    '-Ithird_party/libevent/include',
+  ],
+)