Convert aos over to flatbuffers

Everything builds, and all the tests pass.  I suspect that some entries
are missing from the config files, but those will be found pretty
quickly on startup.

There is no logging or live introspection of queue messages.

Change-Id: I496ee01ed68f202c7851bed7e8786cee30df29f5
diff --git a/aos/ipc_lib/raw_queue_test.cc b/aos/ipc_lib/raw_queue_test.cc
index aa3b335..3048e1b 100644
--- a/aos/ipc_lib/raw_queue_test.cc
+++ b/aos/ipc_lib/raw_queue_test.cc
@@ -191,7 +191,8 @@
       case 0:  // child
         if (kForkSleep != chrono::milliseconds(0)) {
           AOS_LOG(INFO, "pid %jd sleeping for %" PRId64 "ns\n",
-                  static_cast<intmax_t>(getpid()), kForkSleep.count());
+                  static_cast<intmax_t>(getpid()),
+                  static_cast<int64_t>(kForkSleep.count()));
           this_thread::sleep_for(kForkSleep);
         }
         ::aos::testing::PreventExit();