Merge branch 'stable-2.15'

* stable-2.15:
  Upgrade bazlets to latest stable-2.15 to build with 2.15.9 API
  Upgrade bazlets to latest stable-2.15 to build with 2.15.8 API
  Upgrade bazlets to latest stable-2.14 to build with 2.14.18 API
  Bazel: Include eclipse-out directory in .bazelignore
  Add explanatory comment to empty BUILD file(s)

Change-Id: Ic284a95223e6fe20727cbe53bc67f4d5fa955b91
diff --git a/.bazelignore b/.bazelignore
new file mode 100644
index 0000000..30f1613
--- /dev/null
+++ b/.bazelignore
@@ -0,0 +1 @@
+eclipse-out
diff --git a/WORKSPACE b/WORKSPACE
index 5cb624d..8ad014e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "bd5e7bafb2bd72a4f84e06f07490b41d2921a65b",
+    commit = "ca34f0cf89b2e041ea7f4aa4b9696efc2d76746f",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/tools/bzl/BUILD b/tools/bzl/BUILD
index e69de29..c5ed0b7 100644
--- a/tools/bzl/BUILD
+++ b/tools/bzl/BUILD
@@ -0,0 +1 @@
+# Empty file required by Bazel