Merge branch 'stable-2.16'
* stable-2.16:
Upgrade bazlets to latest stable-2.16 to build with 2.16.5 API
Upgrade bazlets to latest stable-2.15 to build with 2.15.10 API
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
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)
Change-Id: Ia35b57a4aaef0563c1ff5e8eeec5cc6c1d1296af