Merge branch 'stable-2.16'

* stable-2.16:
  Upgrade bazlets to latest stable-2.16 to build with 2.16.4 API
  Automatically format BUILD file with buildifier lint mode
  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
  Upgrade bazlets to latest stable-2.16 to build with 2.16.2 API
  Format Java files with google-java-format
  Upgrade bazlets to latest stable-2.16 to build with 2.16.1 API
  Bazel: Include eclipse-out directory in .bazelignore
  Add explanatory comment to empty BUILD file(s)
  Bazel: Consider setting timeout="short" or size="small"

Change-Id: I91af83ee601ad27779af7f7a653a8f21491e97c1
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/BUILD b/BUILD
index 6d4d0c5..20b85a8 100644
--- a/BUILD
+++ b/BUILD
@@ -18,6 +18,7 @@
 
 junit_tests(
     name = "reviewers_tests",
+    size = "small",
     srcs = glob(["src/test/java/**/*.java"]),
     tags = ["reviewers"],
     deps = [
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