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/libc/BUILD b/aos/libc/BUILD
index 48a9ffd..234c29a 100644
--- a/aos/libc/BUILD
+++ b/aos/libc/BUILD
@@ -9,7 +9,7 @@
         "aos_strsignal.h",
     ],
     deps = [
-        "//aos/logging",
+        "@com_github_google_glog//:glog",
     ],
 )
 
@@ -20,7 +20,6 @@
     ],
     deps = [
         ":aos_strsignal",
-        "//aos/logging",
         "//aos/testing:googletest",
     ],
 )