Merge branch 'stable-2.11'

* stable-2.11:
  Allow to push a tag that points to a non-commit object
  Insert Change-Id into access right changes
  Add "final" to the public static PLC_ORDER.
  SystemLog: fix duplicated log lines after reloading a plugin
  Fix clone URL in quick-install documentation
  Remove --recheck-mergeable option from reindex documentation

Change-Id: I6247bc0fd3c8c276630b4a2d189254b980a763c2

gerrit-server/src/main/java/com/google/gerrit/server/util/SystemLog.java

@@ -72,6 +72,7 @@ public class SystemLog {
 
   public AsyncAppender createAsyncAppender(String name, Layout layout) {
     AsyncAppender async = new AsyncAppender();
+    async.setName(name);
     async.setBlocking(true);
     async.setBufferSize(config.getInt("core", "asyncLoggingBufferSize", 64));
     async.setLocationInfo(false);