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/third_party/ceres/BUILD b/third_party/ceres/BUILD
index 8bc1dde..2a4028a 100644
--- a/third_party/ceres/BUILD
+++ b/third_party/ceres/BUILD
@@ -179,7 +179,7 @@
 TEST_DEPS = [
     "//:ceres",
     "//:test_util",
-    "@//third_party/eigen",
+    "@org_tuxfamily_eigen//:eigen",
     "@com_github_gflags_gflags//:gflags",
 ]
 
diff --git a/third_party/ceres/bazel/ceres.bzl b/third_party/ceres/bazel/ceres.bzl
index b9bedf5..d99046a 100644
--- a/third_party/ceres/bazel/ceres.bzl
+++ b/third_party/ceres/bazel/ceres.bzl
@@ -209,7 +209,7 @@
         ],
         visibility = ["//visibility:public"],
         deps = [
-            "@//third_party/eigen",
             "@com_github_google_glog//:glog",
+            "@org_tuxfamily_eigen//:eigen",
         ],
     )
diff --git a/third_party/ceres/examples/BUILD b/third_party/ceres/examples/BUILD
index 1986932..80d9a67 100644
--- a/third_party/ceres/examples/BUILD
+++ b/third_party/ceres/examples/BUILD
@@ -37,7 +37,7 @@
 
 EXAMPLE_DEPS = [
     "//:ceres",
-    "@//third_party/eigen",
+    "@org_tuxfamily_eigen//:eigen",
     "@com_github_gflags_gflags//:gflags",
 ]