Merge branch 'stable-3.1'

* stable-3.1:
  Add an empty tools/BUILD file explicitly for Bazel

Change-Id: I4681161190f3a38e350b43d93399250a29c840d5
diff --git a/WORKSPACE b/WORKSPACE
index 95ad98a..22f0515 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "968b97fa03a9d2afd760f2e8ede3d5643da390d2",
+    commit = "fbe2b2fd07c95d752dced6b8624c9d5a08e8c6c6",
     #local_path = "/home/<user>/projects/bazlets",
 )