Merge branch 'stable-2.15' into stable-2.16

* stable-2.15:
  Upgrade bazlets to latest stable-2.15 to build with 2.15.14 API

Change-Id: I5d54edf68a7651bd7b2745dd02c53fccbe760714
diff --git a/WORKSPACE b/WORKSPACE
index 4241306..a389909 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "a2830809bc277f55e094e8203fee04d9dc802e51",
+    commit = "d100b6aad6b37e7db8fa141020c882dc97fb7723",
     #local_path = "/home/<user>/projects/bazlets",
 )