Merge branch 'stable-2.15'

* stable-2.15:
  Adjust names of prolog dependencies
  Add optional dir_name argument to gerrit_plugin
  gerrit_plugin: Improve stamping error message
  Upgrade Gerrit API to version 2.15.2

Change-Id: I1b9815289e1a632603380468844092a1fb686999
diff --git a/gerrit_api_maven_local.bzl b/gerrit_api_maven_local.bzl
index 32f0db7..c294e0a 100644
--- a/gerrit_api_maven_local.bzl
+++ b/gerrit_api_maven_local.bzl
@@ -5,7 +5,7 @@
 gerrit_api is rule for fetching Gerrit plugin API using Bazel.
 """
 
-VER = "2.15.2-SNAPSHOT"
+VER = "2.16-SNAPSHOT"
 
 def gerrit_api_maven_local():
   bouncycastle_repos()