[auto] Update caffe2 to follow pull request 1608

onnxbot · onnxbot · commit 0ad1ba98c2d0 · 2018-02-23T00:54:19.000Z
diff --git a/third_party/caffe2 b/third_party/caffe2
@@ -1 +1 @@
-Subproject commit c48918c101498d87e59435b39ac60027e3e4ae3d
+Subproject commit b97c46ad6a1d2c126594cf1f0be9735ca84abd57
