MXS-2008 Enforce right initialization of maxbase

Now maxbase can only be initialized via maxbase::init().

maxutils/maxbase/include/maxbase/messagequeue.hh

@@ -18,7 +18,6 @@
 namespace maxbase
 {
 
-class MaxBase;
 class MessageQueue;
 class Worker;
 
@@ -176,9 +175,8 @@ public:
      */
     Worker* remove_from_worker();
 
-public:
-    // TODO: Make private once all callers have been modified.
-    friend class MaxBase;
+private:
+    friend class Initer;
     static bool init();
     static void finish();
 

maxutils/maxbase/include/maxbase/worker.hh

@@ -974,8 +974,8 @@ protected:
      */
     static void resolve_poll_error(int fd, int err, int op);
 
-public:
-    // TODO: Make private once all callers have beed modified.
+private:
+    friend class Initer;
     static bool init();
     static void finish();