Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Add standalone bazel build for 2.14.17 with Eclipse project generation
  Remove leftovers from Buck-based build
  Format Java files with google-java-format
  Format BUILD file with buildifier

Also update the bazlets revision in WORKSPACE to build with 2.15.7.

Change-Id: I3434bf03770d2bad9914af25980c2167897c6b37