Add failing test for HTTP Client

Reported by Hagen:
http://groups.google.com/group/nodejs/browse_thread/thread/335b565360437b36

test/test-http-client-race.js

@@ -0,0 +1,35 @@
+include("mjsunit.js");
+PORT = 8888;
+
+var server = new node.http.Server(function (req, res) {
+  res.sendHeader(200, [["content-type", "text/plain"]]);
+  res.sendBody("hello world\n");
+  res.finish();
+})
+server.listen(PORT);
+
+var client = new node.http.Client(PORT);
+
+var body1 = "";
+var body2 = "";
+
+client.get("/").finish(function (res1) {
+  res1.setBodyEncoding("utf8");
+
+  res1.onBody = function (chunk) { body1 += chunk; };
+
+  res1.onBodyComplete = function () {
+    client.get("/").finish(function (res2) {
+      res2.setBodyEncoding("utf8");
+      res2.onBody = function (chunk) { body2 += chunk; };
+      res2.onBodyComplete = function () {
+        server.close();
+      };
+    });
+  };
+});
+
+function onExit () {
+  assertEqual("hello world\n", body1);
+  assertEqual("hello world\n", body2);
+}