Upgraded to new fresh Multiverse with CountDownCommitBarrier bugfix

akka-core/src/main/scala/stm/TransactionManagement.scala

@@ -156,7 +156,6 @@ class GlobalStm extends TransactionManagement with Logging {
         val result = body
         val txSet = getTransactionSetInScope
         log.ifTrace("Committing global transaction [" + mtx + "]\n\tand joining transaction set [" + txSet + "]")
-        mtx.commit
         // Need to catch IllegalStateException until we have fix in Multiverse, since it throws it by mistake
         try { txSet.tryJoinCommit(mtx, TransactionConfig.TIMEOUT, TimeUnit.MILLISECONDS) } catch { case e: IllegalStateException => {} }
         result