added handling of GiveGo in Committed

src/main/scala/org/scadcop/solver/decentralized/mgm2/AgentBehaviour.scala

@@ -356,6 +356,12 @@ class AgentBehaviour(variable: Variable,
   */
   when(Committed) {
 
+    //when it receives its partner's giveGo
+    case Event(GiveGo, mind) => {
+      stash
+      stay using mind
+    }
+
         // When it receives a reject it does NOTHING
     case Event(Reject(_), mind) =>
       if (debug) println(s"$variable in $stateName has received Reject")