[auto] Update caffe2 to follow pull request 1539

onnxbot · EC2 Default User · commit 02b6ccc87f54 · 2018-01-31T03:22:25.000Z
diff --git a/third_party/caffe2 b/third_party/caffe2
@@ -1 +1 @@
-Subproject commit b6b8c1e40283fd5b5b03452977f4563d403ff65e
+Subproject commit efa93adc8ef7ee4c3647a590801e71ea2a1a0c64
