Merge branch 'stable-2.15' into stable-2.16

* stable-2.15:
  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
  Bazel: Include eclipse-out directory in .bazelignore
  Add explanatory comment to empty BUILD file(s)

Change-Id: Id67c34e6bc1b3f6aaa295a338068676e805791d1
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/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
diff --git a/tools/eclipse/BUILD b/tools/eclipse/BUILD
index 5b770f5..2cc9da5 100644
--- a/tools/eclipse/BUILD
+++ b/tools/eclipse/BUILD
@@ -1,5 +1,5 @@
-load("//tools/bzl:plugin.bzl", "PLUGIN_DEPS")
 load("//tools/bzl:classpath.bzl", "classpath_collector")
+load("//tools/bzl:plugin.bzl", "PLUGIN_DEPS")
 
 classpath_collector(
     name = "main_classpath_collect",