Convert Subscription and SubscriptionManager to MString.

TCPServer.cpp

@@ -140,12 +140,10 @@ namespace core
       data.str("");
    }
 
-   TCPSession *TCPServer::getSessionByAlias(coreutils::MString *alias)
-   {
-      coreutils::Log(coreutils::LOG_DEBUG_1) << alias;
+   TCPSession *TCPServer::getSessionByAlias(coreutils::MString alias) {
       for (auto session : sessions)
-         if (session->compareAlias(*alias))
-            return session;
+	if (session->alias == alias)
+	  return session;
       return NULL;
    }